This list probably won't save you any money, but it'll help you understand some of the small ways companies get away with overcharging us.  Here are five subtle ways you're getting ripped off at the grocery store.

#1.)  Sneaky Packaging Tricks. Look at the bottom of basically any jar of peanut butter, and you'll notice that it isn't flat, it curves in.  And they do it for one reason:  So they can get away with cheating you out of 2 ounces of peanut butter.