Add Yahoo as a preferred source to see more of our stories on Google. When big-box warehouse store Costco raised its membership fees in September, many customers shared that the increase wasn’t enough ...

Costco has been clamping down shoppers using membership cards that don't belong to them. There are still ways to shop without a membership: online, with a gift card, or as a member's guest. The extra ...

WASHINGTON — Costco is getting stricter about enforcing its membership rules after seeing more non-members using membership cards that don't belong to them at self-checkouts. The wholesale club's ...