Our local version of Whole Foods is a place called Natural Pantry and I saw a really cute Jewish girl in there a while back arguing with the cashier. They have these discount cards there that they punch if you spend a certain amount on vitamins. Once the card is full, you get 10% off of your whole purchase. "Why! Why can't you just charge me $2 more for this so I can fill up my card? I don't see why? Why can't you just do it?" The cashier did it.