Costco Learning An Expensive Lesson About The Cost Of Switching Cards

Intrigued by how Costco is discovering the many expensive complexities in transitioning from store-branded card to another.

Costco has said that it needs more time than originally announced to make its move from Amex to Citigroup Visas. It had initially announced an April 1 cutoff date but the retailer now says it will be closer to "the middle of summer."