I just had a customer tell me a surprising story (or maybe I'm just naive and it's normal). They bought something expensive at a local small business - the cost was about $2900, and they put it on their discover card. Of course the charge showed up on that month's statement. The next month they saw another charge for about $95 or so from the same business. When they called the business to ask what the charge was for, they were told that because the business pays a higher fee to discover, they charge their customers a separate fee for discover purchases. I don't have a discover card, and honestly don't have many customers use it for purchases. So for those of you more familiar with discover transactions, is this normal? Do you charge a separate fee? I hadn't heard of such a thing until now. I didn't know it was legal to pass on any merchant fees to the customer, especially as a separate charge a month later that the customer didn't sign off on.