There are policys in place because people are always trying to get around the "proper" way to make an exchange. When you try to return an item that wasnt purchased at that location, inventory gets screwed up. I work for a retailer and its amazing what people try to bring back. Crap they just picked up off the shelf and walk straight to customer service for a refund. Used make-up, baby formula,fresh or frozen items, none of that can be resold, its a loss! And all the times I've heard it didnt taste good. Some people have their receipts, not all. And people wonder why prices are so high....