Buy: Cheese
The cheese aisle at Costco is great for cheese lovers. There is a huge variety over there, and they are priced fairly as well. In fact, you can get enough cheese for 3 or 4 dinner parties for less than $20!
Skip: Signateur gas grill
Even though Costco offers the Signateur gas grill for about half the price of a Weber grill, you should know that it is not the best on the market. Not only that, but it is hard to look for replacement parts.