From bakery treats to deli meals and food court surprises, these 11 new Costco groceries are landing in warehouses now.

Costco has tested self-checkout, and has largely abandoned that experiment. Now, it has added a new checkout method that ...

Costco's famously generous return policy has long been part of the warehouse club's appeal, but it also creates a quiet feedback loop about what is not working for shoppers. When members start hauling ...