What stores can you get amazon gift cards at?

Wal-Mart department stores usually have a rack of gift cards by the check-out lanes. Target does too, but may not have the Amazon.com gift cards. They have been seen in the larger gas station chains near the phone cards. Some Kroger supermarkets have change machines were you can dump your loose change into and receive paper money in return. These gives you the option to get your money in the form of a Amazon.com gift card.