Costco Wholesale is a members-only warehouse selling a huge variety of items. The experience is consistently rewarding, with great produce, terrific clothing selections, and delicious bakery items. Shoppers find it always a good value, noting attractive .97 price items for marked-down goods. The customer service and experience are understood incredibly well, featuring an unquestioning money back guarantee, extended warranties, and concierge service, which cultivates a cult-like customer devotion. However, the store is often too crowded all the time. The checkout and return process can be inefficient, taking forever despite being staffed. The parking lot is also frequently completely packed or full, with suggestions for expansion or another area store. Overall, the customer experience isn't bad.