Buy: Uncooked Cookies
Did you know that it is possible to bring home cookies and uncooked pastries for a low price at Costco? You should just drop by the bakery counter and tell the staff that you want a box of uncooked cookies. This is a good way to save a great deal of money. You normally have to pay $7.99 for a box of 21 cookies. However, you can get up to 120 pieces for only $22.99 if you get uncooked ones instead.
Worst: Rice
There are shopping experts who will tell you that you should go to a different store if you want to get rice. A frequent shopper at Costco looked into it and found out that she was paying 35% more when she bought her rice at Costco. She was comparing it to the price of the same product at the local Asian store. There were also cases in which the same amount was sold at Costco for $40 but only $14 elsewhere.