Costco quirk
Everyone knows that costco only accepts Amex in its stores. They do however accept any card when shopping on line..
So I made an online purchase a few weeks, and decided to return it a local store over the weekend. Apparently I had paid with a visa online, and since they don't process anything but Amex in stores, they had to give me cash back.
Thought this was kind of interesting, and figured I'd share..