Merchants are pushing for more credit card fee reform, for the fees they have to pay. Every time you swipe at checkout, whether it’s a credit or debit card, the merchant has to pay two fees. One is a flat per transaction fee, the other is a percentage of the total sale, called the interchange fee. Those rewards cards you’re so fond of? They have the higest interchange fees. Those rewards and cashbacks don’t come from a magical reward tree, they’re paid for by the interchange fees. In other words, the Quickie Mart is paying for your “free” airline miles.