I was literally just thinking of this and how there is one kind of near me that if you go in to buy a drink and don't buy more than $5 worth of stuff (if using a card) they add a quarter to your total for the credit card fee. They also have a tendency to make mistakes (not in your favor) when giving back change...but that is another story lol.Except that sketchy gas station right on the edge of the not so great part of town