Yahoo Finance

You can find some great deals at the dollar store — that is, if you shop at a store where everything costs just $1. Despite their names, Dollar General and Family Dollar do not charge a dollar or less for everything. However, Dollar Tree and 99 Cents Only do.

Even if you're paying a buck for some items at these stores, though, you're paying too much. That's because there are other stores where you can find them for less.

Click through to find out when the $1 price isn't the best deal.