Yahoo Finance

In the US, our strong momentum in both percentage and dollar terms continues. In Canada, we're seeing sequential acceleration in growth, and the UK and Germany are tracking in-line with the high expectations we set for ourselves, reflecting customers growing awareness and appreciation for the Wayfair brand and shopping experience.

Today, I will provide you with an update on our logistics network, which is a major differentiating advantage for us, and a source of improved cost efficiency. I also want to talk briefly about the special set of supplier events we hosted this past quarter, which showcase the true partnership we share with our suppliers. And as is our quarterly practice, I will highlight the exciting initiatives we have under way in one of our categories.

Today, our focus will be on the outdoor furniture business, which was a strong driver of growth in the first half of 2019, despite seasonal variability, and as yet, another example of a category, where we are consolidating share, as the business moves increasingly online.

First, let me begin with our logistics network. We remain on track to add approximately 5 million square feet of space to our logistics footprint in 2019, building on the 12 million square feet with which we exited 2018. During the second quarter, we opened our 13th CastleGate warehouse building. The warehouse is located in Savannah, Georgia, where we also established an additional last mile delivery facility. This marks the 10th new last mile delivery facility of the year, for a total of 39 now operational in North America.

Our CastleGate penetration in the US continues to trend upward due to robust levels of growth. At the current pace, this means that the actual dollars flowing through CastleGate for both large and small parcel, are doubling year-over-year. We believe we are well prepared to meet the increased demand and that we have architected our logistics network to move steadily toward lower cost and faster delivery times as it scales.

We now have a warehouse presence in most major US port locations, and last mile delivery facilities, strategically placed across the continent, giving us great coverage. While we will continue to add facilities to service the growing demand, we believe efficiencies from the investments already made, should continue to build moving forward.

Unlike the US, where we established CastleGate several years into our life as the Wayfair brand, our expansion into international markets was informed by our logistics expertise and we introduced CastleGate earlier into the launch.

CastleGate penetration in our international markets is naturally further behind, given the relative maturity of the business there. But we continue to see gains in penetration as we scale.

In Canada, we are making progress in inducting more product directly into our Mississauga facility, rather than having across the border from the United States. This is driving lower costs for our suppliers and ourselves reducing duty paid, and in turn, will benefit customers in the form of lower prices.

In the UK, we plan to open a second CastleGate warehouse next month, and in Germany, we'll will be adding a new 1 million square foot facility sometime next year. As you might imagine, this European footprint is designed to handle existing and future demand out of the markets we currently serve, but may also be leveraged down the road, as part of a pan-European network.

Our logistics infrastructure is only one component of enhancing, not just our customers, but also our suppliers experience of working with us. We have a true partnership with more than 11,000 suppliers, and we view them as a core part of the Wayfair family.

To further strengthen and reinforce these relationships, we recently hosted invite-only suppliers summit events, in both the US and in Europe. Hundreds of supplier CEOs and other leaders joined our fifth Annual US event in Boston, and our third Annual European event in Berlin. These gatherings, which grow more robust and format and increase in attendance each year, give us an opportunity to reconnect with our partners, and showcase the many exciting Wayfair initiatives designed to drive their business goals.

Our guests benefited from nearly 50 presentations, highlighting various parts of our business. Q&A with Steve and myself. Multiple networking opportunities and breakout sessions. Suppliers also shared their success stories in partnering with Wayfair, and what enabled the great growth that they've experienced. Garnering an NPS score of 90, the Summit represents a unique and valuable opportunity for suppliers to educate themselves on ways to optimize critical business functions, from both peers and Wayfair. It's also an important form to reaffirm our commitment to our partners and inspire them to keep the customer top of mind, to ensure our mutual future success.

As we enjoy the warmer months of the year, it seems like an appropriate moment to highlight the great business we are building in outdoor furniture. Last year we talked to you about outdoor decor structures and spas. Today we'll dive deeper into outdoor furniture, where we're pleased to report that we are experiencing strong growth in 2019.

We see outdoor furniture as uniquely suited to the online marketplace. The category is large at an estimated $5 billion in the US, is attractive as growth is being driven by consumers increasingly viewing the patio area as an extension of their living rooms, and is a place in which to entertain. They're willing to invest time and money in making an optimal selection, not just for aesthetic reasons, but for durability as well.

In the physical retail world, the customer choices are very limited. Brick and mortar retailers devote only a short time of the year for outdoor displays, presenting shoppers with few choices and limited specialty knowledge to inform the purchase decision.

Wayfair offers the shopper a far-reaching assortment, with good, better and best options in each sub-segment of outdoor furniture. For instance, we feature over 2,300 four person patio dining sets in the US, with prices spanning from less than $100 to over $2,500, in order to fit every style and budget. At Wayfair the customer has the flexibility to shop the outdoor category year round, whether that is when weather is great outside or when inspiration for next season strikes. And we consistently help our customers make educated decisions in a frequently less understood category, through enhanced merchandising, swatch samples, buying and care guides, and spatial planning tools.

In visual merchandising, we are focused on making imagery, not just inspirational and aspirational, but also accessible and relatable for the mass customer that represents the bulk of Wayfair traffic. We're also introducing dynamic imagery, which can showcase products in the most appropriate context, based on what the shopper is seeking or what season they're shopping.

When searching for stools for the outdoor bar, they should not be seeing that barstool purchased against the Kitchen Island, even though that specific product may be designed for both indoor and outdoor settings. In the fall, fire pits, throw blankets and covers might be more compelling images and suggested complements than swimming pools and sun umbrellas.

To make the category even more accessible and fun to shop, in 2019, we introduced our first outdoor house brand, called Sol 72. The brand is focused on mid-priced outdoor furniture and decor and the participating SKUs receive our most enhanced merchandising treatment. We're just getting started, but Sol 72 is off to a very strong start, and it has exceeded the internal benchmarks we set for ourselves upon launch.

We also have a unique marketing approach in outdoor furniture that leverages customer base signals to improve our bidding algorithms across geographic zones and product classes. This data driven methodology allows us to be more effective in how we invest our ad dollars, by identifying the most optimal geographic and product areas, against which to spend, and to identify those customers with the highest intent to purchase. This is driving increased efficiency to our ad spend in the category.

In terms of logistics, there is strong interest from our outdoor furniture suppliers, in participating, in CastleGate, where our category penetration is already at company wide-levels, but with the potential to reach far higher.

As with all of the categories we seek to further penetrate, we plan to leverage our scale in outdoor furniture and our broader logistics network, to eliminate touch points along the product journey, speed up delivery times and cut down on costs for the customer, the supplier and Wayfair.

We're very pleased with the momentum we've built in outdoor furniture, with year-to-date revenue growth near 50% year-over-year and the business on track to exceed $500 million in gross revenue in 2019. It is just one of the many businesses at Wayfair, gaining disproportionate share, as customers move online and discovery rich and differentiated shopping experience on wayfair.com.

Before I turn it over to Steve, I want to just take a minute to address the headlines we made in late June. As you may have seen, recent dialog between a group of our employees and our leadership team placed Wayfair in the media spotlight, and in the midst of a broader political debate. Transparency and the open exchange of ideas have always been core to Wayfair's culture. We have an ongoing dialog with our employees and are proud to have a terrific team that is passionate and engaged, both at work and in their broader communities.

Our employees have always played a significant role in helping to shape Wayfair's long track record of community involvement and charitable giving. And we believe in supporting the causes that matter most to our team. We're committed to constructively working together with Wayfairians all over the world, to internally navigate this and other important topics that may arise in the future.

And with that, we will turn back to the Q2 results and to Steve's prepared remarks.

Steve Conine -- Co-Founder & Co-Chairman

Thanks Niraj. I would like to take a few minutes to update everyone on our newest brand, Perigold. With Perigold, our opportunity is to disrupt the luxury home market, with an e-commerce marketplace that the luxury customer expects, just as we have with the mass market customer in wayfair.com. This is a huge opportunity, with the high-end home goods market in the US measuring north of $70 billion by our estimate, and also underpenetrated in e-commerce.

Our mission at Perigold is to reveal an undiscovered world of luxury. We're targeting customers and professionals who are increasingly comfortable transacting online, but are underserved in luxury e-commerce platforms for home. They are also largely incremental to those we currently serve on wayfair.com.

Part of the Perigold customers' challenge has been the supplier universe that is nascent to the digital world, and initially, somewhat reticent to participate.

When we first launched our team of fewer than 10 people, had to onward suppliers, convey the benefits of the e-commerce model, and convince them that Perigold could represent a large and rapidly growing revenue channel. Today, Perigold features over 500 suppliers, with a rich pipeline of additional one still to join. Some of the prominent luxury brands that already call Perigold home include Lillian August, Schumacher, Arteriors, Currey and Company, Century Furniture and Janus et Cie.

With a dedicated team of now over 70 people, we continue to gain traction, recognition and legitimacy among suppliers, and have been able to more than triple the number of products in our site since the launch. A few months ago, I traveled to Milan for the Salone del Mobile trade show; a design event that draws more attendance the Fashion Week. There I had the opportunity to meet with key suppliers, both present and prospective, and was really impressed by the level of trust our suppliers are placing in us, and the reputation we've established among the luxury community.

Suppliers are having success partnering with Perigold, and in turn are spreading the word to their peers, keeping the flywheel turning and furthering the inroads we are making. The conversations and enthusiasm reminds me of the inflection point we witnessed with wayfair.com several years into visiting mass oriented trade shows like high point in the US.

In Perigold's case, because luxury suppliers have historically had very little or no exposure to e-commerce, we partner closely with our suppliers to develop uniquely tailored digital assets, in both 2D and 3D, visualization tools and merchandising strategies. Building on our established formula for success, we will be hosting our second supplier summit for Perigold later this year to share even more best practices. There we will welcome many new and respective suppliers under the Perigold platform, and reinforce the already strong existing relationships we've built over the last two years.

Together, we will elevate the customer experience of shopping for high-end home goods online. We are learning more about the luxury shopper every day. Our customers represent the top 5% of US households in terms of income, and live all across the country. They value quality and uniqueness and are highly focused on finding the right look for their homes. They look to Perigold not just as a source of high-end product, but also for content that enables them to find the perfect esthetic for their living spaces.

To help our shoppers do so, we are bringing the design center concept online. Perigold brings the customer's design options to life through inspiring imagery and visualization tools and engages and educates them about these options. It then enables them to purchase the goods and materials to achieve those looks at home without delay, all backed by exceptional customer service and delivery experiences.

The Perigold customer is consistent in their expectation of quality and service; because customer service is a core part of our DNA, we can establish a clear competitive advantage here with Perigold, just as we've done at wayfair.com. Perigold customer service is designed with a high-touch concierge approach, where if they choose,, our team will reach out to shoppers and guide them through the purchase or project they are contemplating. Our team is specialized in their knowledge of luxury home, and therefore, well equipped to aid the customer journey from start to finish. For professional shoppers on Perigold, their concierge becomes the point person for any future projects or purchases as well. This experience has been resonating very well with our customers. Though it is notable, that a large portion of our customers also transact at high average order values, with minimal aid. Perigold's net promoter score continues to trend higher, as we iterate and improve how to best serve these customers over time.

Our marketing philosophy for all of our brands is deeply rooted in quantitative returns oriented approach and Perigold is no different. We have successfully begun to penetrate our target market, while continuously tweaking the recipe to explore the best methods to convert the many types of shoppers that browse the site. Perigold reserves a portion of its marketing dollars for experimental channels and strategies. This helps the team to identify new high returning advertising venues, and to incorporate ever evolving customer insights to most effectively target the audiences we seek.

As with all our brands, 12-month payback thresholds are a consistent criterion for Perigold, as the team looks to optimize its ad spend. We could not be more eager to further our disruptive role in bringing luxury home shopping online. Perigold gross revenue is on track to more than double this year, and we look forward to updating you on its future success over time.

With that, I'll turn the call over to Michael.

Michael Fleisher -- Chief Financial Officer

Thanks Steve and good morning everyone. I will provide some highlights of the key financial information for the quarter, with more detailed information available in our earnings release, and in our investor presentation on our IR site.

In Q2, our Direct Retail business increased 42% year-over-year to $2.332 billion, representing year-over-year dollar growth of approximately $690 million. Our total net revenue also increased 42% year-over-year to $2.343 billion. In the US, Direct Retail net revenue increased to $1.989 billion in Q2, up 42% year-over-year, representing year-over-year dollar growth in the quarter of approximately $590 million. Direct Retail net revenue from our International segment, which includes Canada, the UK and Germany, increased to $343 million , up 41% year-over-year and up approximately 47% year-over-year on a constant currency basis. As a reminder, our revenue from Canada is significantly larger than our revenue coming from either the UK or Germany today.

In recent quarters we experienced revenue growth headwinds in Canada, due to a combination of external macro and currency headwinds, and a temporary cost disadvantage, as we sourced product into the US first, before crossing the border into Canada. We expect the second factor to gradually lift, as we induct more product directly into our Canadian Mississauga facility. And did in fact see year-on-year growth in the Canadian business sequentially accelerate in Q2, relative to Q1.

Our UK and German businesses continue to outpace our overall company revenue growth rate, and are hitting key internal milestones. In both European markets, we have significantly increased the SKU selections year-over-year, with more to come. We've also grown more sophisticated in merchandising and advertising, which is driving higher levels of repeat purchases in both countries. CastleGate penetration in the UK and Germany also continues to march higher year-over-year.

I'll now speak to our KPIs on a consolidated global basis. We were pleased to see another strong quarter for new customer acquisition with our LTM active customer base reaching 17.8 million in Q2, an increase of 39% year-over-year. LTM net revenue per active customer was $447 and LTM orders per active customer were 1.86 in Q2. Both KPIs were up modestly on a sequential basis. LTM net revenue per active customer was driven higher by the US, while orders per active customer experienced small increases quarter-over-quarter, in both the US and International.

I will share the remaining financials on a non-GAAP basis, excluding the impact of equity-based compensation and related taxes, which totaled $57 million in Q2 2019. For a reconciliation of GAAP to non-GAAP reporting, please refer to our earnings release on our IR site.

Our gross profit for the quarter, which is net of all product costs, delivery, and fulfillment expenses was $561 million or 23.9% of net revenue. Gross margins were 60 basis points higher year-over-year, and in line with our near-term expectation for gross margins in the 23% to 24% rate range, which remains unchanged.

In Q2, advertising spend was $259 million or 11.1% of net revenue, approximately 35 basis points higher than Q2 last year, and better than our guidance of a 75 basis point increase. As you recall our ad spend decisions are governed by our approximately one year contribution margin payback threshold, and we continue to see attractive opportunities to invest advertising dollars within this framework. We believe the success of that approach is evident in both LTM active customers, and percentage of orders driven by repeat customers, reaching all time highs this quarter.

Our proprietary ad spend technology allows us to invest behind the highest returning customer cohorts, which tend to make repeat purchases year after year. As our marketing teams continue to execute on this approach, we expect advertising as a percent of net revenue to increase roughly 50 basis points to 75 basis points year-over-year in Q3. A component of this, is a drag as Europe becomes a larger part of our business mix, and as we continue to ramp our brand-building investments there. Our non-GAAP selling operations technology and G&A expenses are driven primarily by compensation costs, and in Q2 totaled $330 million.

In the second quarter, we added approximately 1,200 net new employees for a total of 14,548 employees as of June 30, 2019. Approximately 850 were in variable cost areas of our business, namely in customer service and in our logistics operation, as we continue to in-source work previously done by third party logistics providers. Approximately 350 of the net new hires were in OpEx areas, such as engineering, marketing, merchandising, product, operations including logistics leadership and technology. As a reminder, Q3 2019 will show a pickup to this pace of hiring, as we welcome the tremendous new talent we attracted through our on-campus recruiting efforts.

Our employer brand is very strong on-campus, and we were able to fill positions in almost every part of our business with recruits from the top universities and graduate schools. In Q4, we plan to step down again, closer to the hiring levels we saw in Q2.

Now turning to profitability; adjusted EBITDA for Q2 was negative $70 million or negative 3% of net revenue. Adjusted EBITDA for the US business in Q2 was negative $342,000, rounding to roughly breakeven as a percent of net revenue and adjusted EBITDA for the international business was negative $70 million. Non-GAAP free cash flow for the quarter was negative $91 million, based on negative $3 million in net cash from operating activities and $89 million in capital expenditures. capex was 3.8% of net revenue in Q2, and we expect Q3 capex to total approximately 4% to 5% of net revenue.

As our business scales, we continue to look for the most cost effective and flexible solution for our data infrastructure, and so we are in the process of partnering with a large cloud provider, to support our ambitious long-term growth plans, and best serve our customers.

In Q3, our OpEx line will reflect $10 million to $15 million of incremental expenses related to this initiative. So we expect to be able to meaningfully reduce our capex spend in this area over the coming quarters. As of June 30, 2019, we had approximately $714 million of cash, cash equivalents and short and long-term investments.

With that I'd like to turn to guidance for Q3 2019. I want to start with our normal update to give transparency on our quarter-to-date performance. On a year-over-year basis, our Direct Retail gross revenue growth is running in the mid 30s thus far into the quarter. While this is somewhat lower growth than when we exited Q2, it is not uncommon for us to have variability in our month-to-month growth rate within a quarter. Our guidance setting discipline is to consider our quarter-to-date performance, as well as our expectation for the full quarter, and then prudently guide. As you've heard me say almost every quarter in our mass-market consumer business, the customer has to show up every day, and there is still a lot of the quarter to go. Given our typical approach, we are setting our guidance for overall revenue growth just below our current quarter-to-date performance.

We forecast Direct Retail net revenue of $2.22 billion to $2.7 billion, representing approximately $525 million to $575 million of Direct Retail dollar growth year-over-year, or a growth rate of approximately 31% to 34%. In the US business, we forecast Direct Retail net revenue growth in the range 30% to 32% year-over-year and expect International Direct Retail net revenues to be up 40% to 45% year-over-year. On a constant currency basis, we're forecasting international growth between 42% and 47% year-over-year.

We forecast other net revenue to be in the range of $5 million to $10 million for total net revenue of $2.23 billion to $2.28 billion for the third quarter. We are not adjusting our current level of investments based on our revenue guide. As such, the US business will swing to a loss this coming quarter. We continue to believe we are on the path to sustained adjusted EBITDA profitability for the US business, but repeat, that it will not be a straight line. At our current near breakeven levels of adjusted EBITDA in the US, even small changes can easily swing us to a gain or loss in any one quarter.

For consolidated adjusted EBITDA, we forecast margins of negative 6% to negative 6.5% for Q3, 2019. Reflecting our ongoing investments in international, continued spend on advertising, where we are delivering our returns threshold, the timing of campus recruits joining Wayfair in the US, and the further build out of our global logistics network.

In the US, we expect adjusted EBITDA margins of negative 2.75% to negative 3%, and expect an international EBITDA loss in the range of $80 million to $90 million in Q3. In North America and increasingly in Europe, our investments are paying off in the form of greater scale and higher levels of repeat over time, which tells us, our strategy of not timing our investments to any particular quarter is working as intended over the long term. We expect to stick to this philosophy, and we will not alter our ROI positive long-term investments to make any particular quarter more profitable.

For modeling purposes, for Q3, 2019 please assume equity-based compensation and related tax expense of approximately $66 million to $68 million. Average weighted shares outstanding of 92.5 million, and depreciation and amortization of approximately $53 million to $55 million.

I'd now like to turn the call back to Niraj, before we take your questions.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Thanks Michael. Steve and I are very excited about the growth of our business this year. The competitive advantages we continue to build on, and the immense opportunity still ahead of us, both in the US and internationally, and in mass and in luxury. Our growth is representative of the remarkable platform and experience we have worked hard to achieve, as well as the strong secular tailwinds, from which we benefit. We're extremely proud of the team of over 14,000 people, and of all of the initiatives they are working on, to make the customer experience as delightful as possible when shopping for the home online.

We want to thank our employees for their hard work, passion and engagement as we collectively strive to capture an outsized share of the secular shift of home good dollars, moving from offline to online.

I will now ask the operator to open up the lines, so we may answer some of your questions. Thank you.

Questions and Answers:

Operator

[Operator Instructions]. Your first question comes from Peter Keith from Piper Jaffray. Your line is open.

Peter Keith -- Piper Jaffray -- Analyst

Hi thanks. Good morning everyone and congrats on the solid Q2 with improving KPIs. Just at risk of asking a bit of a short-term question, Michael, the shares have kind of turned down since you provided some of the quarter-to-date metrics. It's obviously a lower trend than what investors are used to seeing and coming off the heels of strong advertising growth for the first half of the year. Wondering if you guys could provide some perception, what's caused this recent decel, and if you might expect any type of reacceleration of business, as the months before forward?

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Hey, Peter. It's Niraj. Thanks for your question. Let me jump in and provide some thoughts and then Michael can chime in with any additional thoughts he has as well. So what I would say first of all, obviously, when you mentioned we were watching the stock pre-market or the growth in the first month of this quarter, those are both very short term measures, and if you look at our stock over time, you see it's highly volatile. If you look at our business, we grow at the rate we grow at, which is really the outcome of doing dozens and dozens of ambitious things. There is inherent volatility that's an outcome of the way we choose to run it, which is what yields, sort of -- in our mind, incredible success and frankly, we can actually map it with the metrics we have internally.

So the reality is that growing in the mid 30s for example, which is what we said quarter-to-date has been, last year, we had four quarters that all grew over 40% and in three of them, we had a month that was in the mid 30s for example. And that's just sort of the reality when you're doing dozens of things, each thing you do, you inject some volatility in the business. You do it for a good outcome. For example, we launched a great new app redesign this quarter that we're really excited about. And when you do that, you reset, some of the customer consideration cycle for a portion of your customers. Well, if you worry about that, and you obsess about those things, you don't actually move the business forward. But when you do it, you know, aggressively, you're actually doing great things for customers, you create really good outcomes.

Here we also have some volatility that's imposed on us, frankly in the sense of tariffs, our business model is more resilient than that of a traditional retailer by being a platform. We have suppliers, who will win, suppliers who will lose, suppliers who will choose to run lower margin and take share of suppliers, which was not to do that, but that creates volatility.

So when we look at it, to answer your question, do we foresee acceleration? I do. When exactly will that kick in? I don't exactly know, and if you look at our history and you look at the way we grew over the years, we've had periods that slowed a little, periods that picked up a little, it's usually on the outcomes of these big things we did. Like one big thing we're doing right now is our logistics network, and that frankly is just-- it's going great and there's huge dividends that are going to come out of that. They come out over period of years and we're now deep enough into it. We are actually -- we are highly, highly confident of those gains. We're actually seeing some of them flow through. As we get more and more volume through that network, we know -- we know what that will yield.

Europe is another big expense that's providing great gains and FX frankly is a headwind, but we don't worry about that, we're investing aggressively -- that's part of the negative free cash flows. We're investing aggressively and putting in place the infrastructure, logistics, in our European business that will let us keep winning. So I know it doesn't speak specifically to the question you have about volatility and it's measured in weeks, but that's the way I think about it. Michael, do you have anything going?

Michael Fleisher -- Chief Financial Officer

No, the only other thing I'd add Peter is, I know you mentioned the sort of ad spend.I just want to remind remind you, remind everyone, we spend our ad dollars based on a one year payback on a contribution margin basis. If we're not getting that one-year payback on a contribution margin basis from the performance of those dollars, we know it quite quickly, and we would ratchet it back. So there is a clear ROI investment on every dollar we spend, we're seeing a payback. We're continuing to see that performance in the cohort -- our cohorts of customers. You saw that in the cohort chart we put out at the end of the last year, and those cohorts have continued to perform, and that gives us a lot of confidence that the ROI metric in the investment we're making in the ad dollars is really working.

Peter Keith -- Piper Jaffray -- Analyst

Okay, that's very helpful. Thank you guys. Maybe if I could ask one other longer-term question and just coming off the heels of your Q2 supplier events, so we continue to hear very favorable commentary about Wayfair from suppliers. But one comment that's starting to resonate is that, that Wayfair has so many new programs that suppliers do have a hard time keeping up or doing proper ROI analysis to justify some of the upfront investment. Is there any thought to slowing supplier programs, to allow for some optimization? Or maybe you are making some of the interface user friendly and some of the data analysis more user-friendly?

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Peter, that's a very, very astute comment you have. We internally have recognized for years. If you look at the website, the app, that's the platform -- the technology platform that we give to our end customers. I mean, If you look at the way in which we've reduced friction and made it more and more intuitive and easy to use, even while adding tremendous amount of feature functionality, you look at that and say man, that's really been quite amazing, you made it more powerful, more complicated in some ways, and yet easier at the same time.

And then if you looked at the technology tools that we've used, historically, with our suppliers, what we historically call the extra net and recently, [Indecipherable] addressed, we branded partner home, you'd say well that really seems like a clunky set of over 100 tools, and if you compare the two, there wouldn't really be a good comparison, and in our business, we are a platform connecting these suppliers with these customers, you'd want totally different set of tools, but equally powerful, equally friction free, equally elegant, and you'd want to make each one more and more powerful, while still making more and more easy. And so that's something that we recognized a while ago, or about six to nine months into scaling up a team that's going after it, and the plans are quite -- we did quite great. It's not an investment we specifically called out, but it's in the guidance we've given you for headcount. So, the costs are captured in there.

And we think it's actually one of our biggest opportunities, because we don't think the answer is to have less and less tools and less and less program. With the tool, the key is to make them easier for suppliers to adapt to them, regardless of the sophistication of the supplier, from a technology standpoint and increasingly, regardless of the size of the team the supplier has on the program, by making it easy for them to opt-in, in a way that can be lighter and lighter from a workload standpoint, easier and easier for them to recognize the ROI, what we're seeing is a huge enthusiasm on their part to participate. But frankly, the complexity involved today is one of the sources of friction that we've been eroding, and I think over the next six, 12, 18 months, we're hoping to transform that platform from what we have today to one that, you know -- well, today we're still viewed as better than a lot of other platforms in terms of supplier tools. We think there's a huge opportunity. We are going to compare it to what we offer consumers, from [Indecipherable] standpoint.

Michael Fleisher -- Chief Financial Officer

Peter, it's Mike. The only other thing I'd add there is, I know you spend a lot of time at markets and so you recognize that there is a very long continuum of supplier sophistication level around how they think about running and manage their own businesses. And so therefore, their ability to take advantage of our business, Niraj was just talking about, is all the investments we're making, to make that easier and easier. But to some extent, this goes back to the very founding of the company, right, from the very beginning we've been educating and working side-by-side with suppliers as our partners to sort of teach them how to take advantage of what we're building. And so at any moment in time, right, whether it's sponsored SKUs or just sort of how to have inventory on hand at CastleGate, whatever it might be, there is a constant dialog with all of our suppliers to sort of bring them along, both with the tools they need to sort of manage it every day, but also to help them think about what their business has to become, in order to take advantage of our opportunity.

Peter Keith -- Piper Jaffray -- Analyst

Okay, thanks a lot guys. It's great feedback. Good luck with the back half Good luck with the back half.

Michael Fleisher -- Chief Financial Officer

Thanks, Peter.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Thanks Peter.

Operator

[Operator Instructions]. Your next question comes from Maria Ripps from Canaccord. Your line is open.

Maria Ripps -- Canaccord Genuity -- Analyst

Good morning and thanks for taking my questions. Appreciate the color on international business. So maybe you can spend a few minutes talking about potential international expansion outside of the existing markets? Sort of what kind of operational milestones would you like to see within your existing international geographies, for you to get more comfort around spending to maybe some of the adjacent markets? And is it a near-term priority for the company?

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Thanks for your question, Maria. So here's the way we think about it. In North America today, we're very focused on the US and Canada, and we think there's still a lot of room there, despite the fact that we built a brand with top of mind awareness and we're well known. In Europe, we started in the UK, and we've organically over time become the leader in the UK, and the brand awareness is now reaching household brand status. It's not quite there, but it's quite close. And then earlier this year, we started to focus on the German business a couple of years ago, but earlier this year, we started the brand building in Germany. We referenced the television advertising that we launched and Barbara Schoneberger is our spokesperson.

Well, what we want to see happen next, which is happening, is we want to see the German business following the same footsteps and we're able to time index these countries and the KPIs, that when we start the marketing different milestones along the way, to make sure that we're seeing the same customer satisfaction, the same repeat performance, and all the types of metrics that we know drive the long-term outcome. And what we don't want to do, is expand further in Europe, in a way that we have many different markets that are all still early stage where it distracts us. What we want to do is make sure we do it in a very methodical way, but we will plan to expand further in Europe over time. But the focus right now is on Germany. Germany is going quite well, and so if it continues going quite well, which is what we would expect, there'll be a point in the not too distant future, where we'll figure out what the next sort of adjacent or obvious European market to tackle would be. But we're not in a rush and we don't have a fixed timeframe for them. It's rather based on this kind of continued kind of focus and continued success.

With the UK and Germany, we address about half of the GDP in Europe. So even though it's only two countries, it's a meaningful portion of the market. And then the thing I would point out, is that costs. When we talk about the investment in Europe or the investment in logistics, they are really big. Part of it is because we're planning for the long-term outcome. On the logistics side, things like Asian consolidation, what we're doing in ocean freight and dredge, than what we're doing in the warehouse, what we're doing with the home delivery, it all adds up. It's quite expensive.

Well Europe is similar, because we built a pan-European network. So today we source from over a dozen countries throughout Europe, and we have a transportation network that pulls those items, brings them into the markets where we then do the home delivery, which today are just the UK and Germany. But the infrastructure we've built to handle taxation, to handle transportation, to handle customer service, to handle language translation, that will make it actually not as difficult for us to enter additional markets. It's not -- there is zero complexity, but is far less, then there would be otherwise.

We have category management teams that are based out of our office in Berlin, but that focused specifically on markets in Italy or Spain or Poland, that are native language speakers and natives of those countries. And so we're actually in -- we think an advantaged position for our long-term European plans, with costs we've already incurred. But in terms of where we're going to focus on building the business right now, it's just the UK and Germany.

Maria Ripps -- Canaccord Genuity -- Analyst

That's very helpful. Thank you.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Thanks Maria.

Operator

Your next question comes from Brian Nagel from Oppenheimer. Your line is open.

Brian Nagel -- Oppenheimer -- Analyst

Hi, good morning.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Morning.

Brian Nagel -- Oppenheimer -- Analyst

I want to go back to if we could and I apologize for that kind of shorter-term nature of the question, but just the guidance, Michael and the sales slowdown -- modest sales slowdown we've seen here thus far in Q2. But having followed Wayfair for a while now, your company -- your ability to track your consumers and know you're consumers is better than anyone I've ever seen. So the question I have is, as you look at what seems to be a deceleration sales from what -- from Q1 to Q2, is there any more color you can give us on the metrics, the KPIs you're looking at, that could help us understand the real genesis of this, and then, so that we can maybe understand better, frame better, whether this is indeed transitory short term in nature versus some type of longer-term slowdown?

Michael Fleisher -- Chief Financial Officer

Yes, Thanks, Brian. Nothing has changed in a substantive way in the broad customer KPIs. I think you, by the way the place you see that is pretty clearly in the Q2 results, right, on every KPI metric in Q2, we basically hit a new high. And so, the way that cohorts are performing, the way that customers are performing their purchases, all of that remains quite strong. I think Niraj pointed to a couple of pieces that could well be factors in this sort of first month of the quarter, right, introducing a new iOS app, that's the kind of thing you do. There is no way to test it. You do it, because it's the right thing to do for customers over the long term. But as we pointed out last quarter, our app is now -- has a more substantive proof of our customers running through it every day. Right. So if you change their purchase path, that's going to have some near-term impact.

As we take supplier tariff price increases and put them into customer prices, right, that's going to change the purchase timeline and process for our customer. And so I think there's a couple of those kind of sort of short-term factors out there, that I think could clearly be impacting this first month of the quarter, and as Niraj pointed out, we certainly had quarters with months in the mid 30s before that ended up at a higher place.

But I think the other piece of it that Niraj talked about earlier is, this level of volatility -- at this scale of this growth rate, this level of volatility and the number of investments we're making, this level of volatility should be expected, right? We are going to have months or quarters that are slightly slower growth than months or quarters that are slightly higher growth. And I think trying to call that to a couple of 100 basis points is going to be really hard.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Joining I'd add to that is -- the app, like for example, we're excited about the app. It's one of dozens of things that we did in the last quarter, that inject volatility. So that is meant to just be an illustrative example. And so those things can create some volatility, then you have external volatility, which, for example could be macro, it could be tariffs, it could be things like that, and you net out these numbers. So when we guide, we're guiding here it's August 1. So we have literally one month of data, three months of the quarter. And so we just use whatever we have. We tell you what's happened so far, and we just use that to project it going forward. So we don't actually say oh well, what we think exactly will happen in the next two months; because the challenge with that is, the timing on these things is never that precise. And so, you know, certain things we're seeing today, last 30 days, 60 days, 90 days, 120 days, very hard to tell. And so what we do is, we just tell you the current date, because that's the fact base we have, and then we just sort of build up guidance around that. But the reality is, as you've seen with the business -- business has some inherent volatility that we are injecting it, because of the sort of ambitious nature we have, which is why we're getting great outcomes. But we sort of don't let that very short-term volatility, which is higher than you would have, if you only grew 2%, 4%, 6%, 8% a year, something lower like that. We don't let that affect how we make good long-term decisions.

Brian Nagel -- Oppenheimer -- Analyst

Got it. Thank you. If I may follow-up on two separate subjects. So Niraj, you spent a lot of time talking about your proprietary distribution infrastructure, which is obviously a key component of the power of the Wayfair model. As we look at the ongoing buildout, how should we think about the duration? How far -- particularly with like in the domestic market, how far are we into the build out? And then maybe for Michael, with this build out, and we look at the expense growth, obviously there's a lot of investments happening at Wayfair. But what portion of that investment spend relates or pertains directly to the build-out of this distribution infrastructure?

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Sure. I mean the distribution infrastructure is an expensive piece of our cost structure today, because as we built out locations, we have a campus in Kentucky, outside of Cincinnati, Ohio. We have a campus in New Jersey. We have buildings in Atlanta, Dallas. We have campus outside LA. But then what we've added, we just had a building in Savannah, and we have two more coming in the not too distant future in Northern California and in Jacksonville.

And so today the utilization of the network is not anywhere near the full capacity we've been building out this footprint. But the footprint, we largely have built out. So what happens is, you get the gains as utilization rises in the buildings. And as you do that you basically create a staffing model, so you can work three shifts, and you can basically really take advantage of the speed opportunity, and get more throughput through the buildings.

We recently, for example, moved a three shift through a seven day a week model with multiple shifts, and what that basically does, is that increases your cost base, it actually makes the per unit cost drop at a certain utilization level, but that's never the day you shift into it. So we actually just -- that's an example of something we just did recently, is actually really -- the model lines, it's fantastic and speeds up delivery, it increases your throughput through the building it increases what your throughput through the building can be. So over the next -- it's hard to put an exact timeframe on it, but, so you think broadly over the next couple of years, what happens is, you're really driving volume through existing buildings more than adding buildings for footprint coverage. And generally are adding buildings more for volume needs, and you are starting to maximize your older buildings and throughput, which is making your cost per unit drop, and you are also reducing transportation costs, as you do it. So to answer your question in terms of the build out well, will we be building a lot more buildings? The answer is yes. Will the profitability of buildings we build in the future be much higher, it will be yes, because we won't be building them until we actually need the space and so the time we have unutilized space shrinks dramatically, from where it is today.

Michael Fleisher -- Chief Financial Officer

Hey, let me just add a couple of thoughts on the sort of cost of that side of investments. I think if you think about the logistics network, build out is having an impact from a cost perspective on both -- on all -- on three lines, right? Gross margin, OpEx and capex, and just to try to like dimensionalize. On the gross margin side, Niraj has used the example of moving to a seven day model, operating model. The place we see that, right, is that you're then going to sort of operate for a short period of time, those boxes are going to operate less efficiently, right, and so the place you see that is in -- is in the COGS line, right, because that's the piece that we're sort of running through, as a cost of goods sold in terms of the delivered cost.

On the OpEx line today, we bear the unutilized rent of warehouses that we built, that are not fully utilized, and today that number is in the sort of range of $15 million to $20 million per quarter. And then on the capex side, right, you can see this quarter, we spent $54 million in PP&E capex, a big portion of that spend is the capex going into this warehouse network, right, and when you think about how the free cash flow of our business has changed, right, last year, first half -- so this year first half, there is two big investments that we've made there. Right one is the continued losses and investment in the international business and the growth of that business. And then the second is, the capital costs, the capex costs that we put in, particularly in the logistics network. And I think as Niraj mentioned, we continue to build that network in advance of the coming volumes. Right, so you have to stay ahead of it or on top of it. But that's how I would dimensionalize the sort of -- the investment places, where the dollars are going to build out the logistics network.

Brian Nagel -- Oppenheimer -- Analyst

All right. Thank you very much for all the color. Appreciate it.

Michael Fleisher -- Chief Financial Officer

Yeah, thanks, Brain.

Operator

Your next question comes from Oliver Wintermantel from Evercore. Your line is open.

Oliver Wintermantel -- Evercore -- Analyst

Yeah, thanks guys. I had a question regarding -- so the order from repeat customers grows -- continues to grow faster than the orders from the new customers, which probably helps your margins, and that US revenues also grows faster than what you guided to, but the EBITDA is basically in line or slightly below. Could you give us some details, why that EBITDA is not reflecting a lot higher due to the revenue growth?

Michael Fleisher -- Chief Financial Officer

Hey Ollie, its Michael. So I think the thing to remember is, that we are -- and I try to say this every quarter, we continue to spend in any quarter based on the long-term investments we're making, in almost every one of our line items. And so if our marketing team finds the right advertising opportunities, and can spend within our payback threshold, those ROI -- those hard ROI thresholds, we're going to spend those dollars and get those new customers, because we know that they're continuing to perform as a new cohort, better than the last previous year's cohort.

Same thing, when you think about, when we're going to go open a new facility or hire a new person. If we're going to make those terminations time to what we think is the right long-term answer to build our business and serve our customer, as opposed to are we going to start to make more in this quarter or or not? And so, in any quarter, I just described it, as we described our Q3 guidance, what we've got planned to spend this quarter based on what we think those, we can do in the ad markets and get our ROIs, is that we know what we're going to do. It will move as we start to see what performance looks like. But if revenue is a little higher or a little lower, we're not going to sort of change the investments we're making for the long term.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Ollie, this is Niraj. Couple of comments I'd just chime in on. One is, if you look at the way we sort of inform that calculation, if you look at repeat running at 7%, you'll see that the customer acquisition cost is still hovering in that same range, of $50-ish and you could see how the paybacks are staying very tight, because actually the repeat economics are getting stronger. And so the ad cost is done in a very disciplined way. But on the EBITDA line, you have a couple other things that drive that in the near term. One as I mentioned, like for example, some of the things we're investing in on the logistics side, like the seven days a week, like those things have some costs. But they will yield good benefits again, not in the current quarter. And then Michael did reference a movement where we're increasingly running infrastructure in the cloud. And so, if you look at it from a cash flow standpoint, that's actually going to be a very good trade for us. But the reality is, it's moving money out of what would be in depreciation into OpEx. And so we're not going to worry about the optics of that, but the reality is, that's going to -- if you're looking at adjusted EBITDA, it's going to weigh on that. But the reality is, what we're focused on is how the company will become incredibly positive on a free cash flow basis. That's what we are always wanted for and so that's, why that's a good trade. So there's a number of things in there.

Oliver Wintermantel -- Evercore -- Analyst

Got it Thanks. And just quickly, Prime Day this year in July was longer than it has ever been. Is that -- have you seen any difference there from your customers trade away from you guys? Is that why the quarter-to-date revenues could be a little bit weaker as well, or do you think that has nothing to do with it?

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

We don't think that has much to do with it, because in fact, when we see things like Prime Day become retail holidays for everybody. They become good days for all retailers out there. In fact, there is some public data showing Walmart, Target, a number of others do it [Phonetic] on Prime Day. You could see that Prime Day is actually a boon for everyone. We saw something very similar on Way Day, where Way Day became a -- and now we like this, because Way days obviously named after Wayfair, we're the lead marketer of it, but a number of other major retailers ran home shopping events on that day and half period. So I think some of these things just become major retail holidays in the way that Singles' Day has in China and I actually think that they're on net, they're sort of good for everyone, the way that a Cyber Monday or Black Friday is.

Oliver Wintermantel -- Evercore -- Analyst

Got it. Thanks very much. Good luck.

Michael Fleisher -- Chief Financial Officer

Thanks Ollie.

Operator

And our final question for today will come from John Blackledge from Cowen. Your line is open.

John Blackledge -- Cowen -- Analyst

Great, thanks. Two questions on logistics, just curious, what percent of revenue or units are running through CastleGate at this point, and as you invest and build it out, how does it drive the customer value prop competitive mode? And also, is it being built in a way that you can increase the speed of shipping to next day at some point similar to Amazon's recent move to Prime One Day? And then on the gross margins, expanded nicely this quarter, just wondering about the impact of the advertising business this quarter, and then how we should think about it kind of ramping in the back half of the year? Thanks.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Thanks John. Let me answer a couple of parts of that and then I'm going to defer to Michael on one part. On the logistics network and speed, it is a nice thing -- if you think about the places that we have operations, the way in which we're running it seven days a week, with multiple shifts, we actually -- that network automatically becomes one day and even a same-day network, as more and more goods are positioned into more and more facilities. And a lot of what we're doing with Asia consolidation and the like, basically enables that. And the real benefit of that frankly is scale, it's actually less expensive than a two day network, because you're basically positioning goods ahead of time, very close to the customer.

So you're basically using a leg of transportation at the same, but you get it closer, so that the last mile leg is shorter and smaller, and so it reduces your net total cost. And so that's something that we're -- that's been part of the vision for a very long time, where speed is critically important in every category of goods.

On the gross margin question and the advertising, I just want to -- on the advertising business, we're very bullish on it, but I just do want to highlight, it's still quite early, and it's still quite small. So I wouldn't -- I wouldn't focus on the advertising business as really being a major driver at all of the financials today. However, we do think that offers great opportunity in the future for upside, and we've been very cautious not put a timeframe on that, because they play out over time and it's not something that we think is a light switch.

On CastleGate penetration, I don't recall the last public numbers we gave. So I am going to let Michael handle that one?

Michael Fleisher -- Chief Financial Officer

Yes the last numbers we gave was the 26% of US small parcel that was back in Q4, that was running through CastleGate, and then in Q1, we talked about 14% of large parcel running through CastleGate. We continue to make progress there. It's not a number we are going to update every quarter. But I do think this from your own conversations, I know with suppliers, this is -- they're adopting -- they continue to adopt and as we get more and more efficient in sort of giving them good forecasts, their ability to sort of run more through that network is really -- is really enhanced. And then the other thing that I always point out on this sort of notion of the penetration is, our whole business is growing so fast, that growing penetration has always been

Unidentified Speaker

different from practically growing the inventory on hand, right? And so that piece is really important to recognize that. Over the last few years, we've gone from not having this program to having 26% of small parcel running through it. If you think about the amount of growth of inventory that suppliers are now putting into our buildings, it's actually really stunning off balance sheet asset for us, if you will, right, because you have all of that inventory, basically with your ability to get it to your -- market it and get it to your customers very quickly, but without having to deploy that capital, and that's really sort of an amazing underpinning of our business model.

John Blackledge -- Cowen -- Analyst

Thank you.

Michael Fleisher -- Chief Financial Officer

Great, thanks John.

Operator

Thank you everyone for joining.

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Yes, thanks everyone. We appreciate your time.

Operator

[Operator Closing Remarks]

Duration: 61 minutes

Call participants:

Jane Gelfand -- Investor Relations

Niraj Shah -- Co-Founder, Co-Chairman, President and Chief Executive Officer

Steve Conine -- Co-Founder & Co-Chairman

Michael Fleisher -- Chief Financial Officer

Unidentified Speaker

Peter Keith -- Piper Jaffray -- Analyst

Maria Ripps -- Canaccord Genuity -- Analyst

Brian Nagel -- Oppenheimer -- Analyst

Oliver Wintermantel -- Evercore -- Analyst

John Blackledge -- Cowen -- Analyst

More W analysis

All earnings call transcripts

More From The Motley Fool

• 10 Best Stocks to Buy Today

• The $16,728 Social Security Bonus You Cannot Afford to Miss

• 20 of the Top Stocks to Buy (Including the Two Every Investor Should Own)

• What Is an ETF?

• 5 Recession-Proof Stocks

• How to Beat the Market

This article is a transcript of this conference call produced for The Motley Fool. While we strive for our Foolish Best, there may be errors, omissions, or inaccuracies in this transcript. As with all our articles, The Motley Fool does not assume any responsibility for your use of this content, and we strongly encourage you to do your own research, including listening to the call yourself and reading the company's SEC filings. Please see our Terms and Conditions for additional details, including our Obligatory Capitalized Disclaimers of Liability.

Motley Fool Transcribers has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Wayfair. The Motley Fool has a disclosure policy.

This article was originally published on Fool.com