Costco's largest value add is their curated selection. They never stock the best nor the worst. Shopping is relaxing because you know you won't be screwed, and

Costco's largest value add is their curated selection. They never stock the best nor the worst. Shopping is relaxing because you know you won't be screwed, and you only have to answer one question: "Do I want this type of product?", you don't have to answer "Yes, which one of the 5 or 10 available?"