I have been a loyal Costco member for nearly 20 years. They offer good sales in bulk so I go to their local store about once a month to stock up household goods like paper towels, detergents, cleaning supplies, etc. The return line is usually long (depending on what time you go), but its always easy to return your item once you reach the counter. Their gas price is probably the cheapest compare to others. I have not tried Costco travel services, but I hope to use it soon. They seem to have good deal there. I have not had good luck on using their car rental discounts though. Even with the discounts, I still pay more than if I were to book the rental through AAA. But overall, Im happy with Costco and their services.