The Costco warehouse club comparison guide 2026 answers the question every shopper with a membership card in their wallet eventually asks: should I be at Costco, Sam's Club, BJ's Wholesale Club, or more than one? Today is October 22, 2026, and with the holidays coming, many households are deciding where to spend a lot of money. This guide compares the three clubs on the things that can actually be compared fairly: membership fees, the cash-back rewards, coupons, returns, and