Word! When I signed up years ago as an AMEX merchant I opted for a flat rate of $5/month instead of a percentage plus fees. There are some months when I get no AMEX sales at all, but overall I pay less than 1 percent on AMEX sales. If your car salesmen opted for the flat rate it cost him $5 to make an instant $11,400, and that's assuming no other AMEX sales all month! That's why merchants accept cards - they increase sales. Also, they don't bounce!