By Daniel Kline The warehouse club has a new incentive and, well, it’s one Costco doesn’t offer. Sam’s Club and Costco (COST) – Get Costco Wholesale Corporation Report have nearly identical business models. Both companies operate warehouse clubs that charge for membership in exchange for offering members very low prices. The Walmart-owned (WMT) – Get Walmart Inc. Report Sam’s Club and its chief rival both offer very similar experiences inside their warehouses. Members get no frills, but do get samples (when it’s not a pandemic), low-cost food courts, cheap gas at many locations, as well as liq…