In our opinion, a Costco membership is absolutely worth it depending on your average shopping list or what you're looking to buy. We save an average of $288 dollars a year on ground beef alone, so regardless of which membership you're going for, you can see how just how great the savings really are! If you're planning on making some big purchases at Costco and/or shopping there often, you may want to consider the executive membership for the 2% cash back benefit.