I think the title speaks for itself, but here goes. On my way out yesterday evening, I stopped off at a convenience store to get a few things. The tab came to about $7 or so, and since I didn't have any cash on me, I whipped out my Visa card. When the merchant saw I was paying with plastic, he added on another 25¢. I caught it and asked him why, and he said it was because I was paying with plastic. I tried to argue the point to no avail. Needless to say, that store has since lost my business. It's my understanding that this practice is specifically against Visa's merchant agreement, and may also be illegal; I have a fuzzy memory of hearing about gas stations getting in trouble regarding this same practice some years ago. Before I go off writing letters and complaining, am I right in thinking that what they did was not completely kosher? I know it's only a quarter, but if they're doing it to me then they're doing it to other people as well.