Buy: Meat and Poultry
You do not only get a better price on meat and poultry at Costco, but the grade of beef will be higher too. If you are want to buy a lot of meat, it is always possible to divide it and leave it in the freezer.
Buy: Kirkland Animal Crackers
Are you looking for a snack for the kids? You should try out the Kirkland Signature Organic Animal Crackers. They are available in a 64-oz barrel for only $9.99. There are other supermarkets that sell them at the same price, although you are going to get 4 oz less.