[Brilliant]

I can guess. The merchant pays a percentage to the card issuer, usually more than 5%. If you can get away with demanding cash then of course you do.

[gloryblaze]

...The merchant pays a percentage to the card issuer, usually more than 5%....

Holy cow, has the fee climbed that high? We never accepted CC's in our tiny enterprise because the fee seemed too high many years ago, and it was well under 3%.