Costco is not a place for the casual shopper. You have to come here knowing what you need or you'll end up with enough mustard to last you for 50 years. The key is having a list and sticking to it. You must be sure you have the storage space for the items at home and that you will be able to use them before they go bad. It's a great place to stock up on things like pet food, paper goods, cleaners, etc. But be careful when buying supersized jars of condiments because most likely you won't have a chance to use them before they've spoiled. The prices are good on many items but you need to know your prices or you will end up buying things that can be gotten much cheaper at your local supermarket.