This is not quite true. They can offer a discount when paying in cash, but they can't charge an extra fee when a credit card is used after the agreement to purc

This is not quite true. They can offer a discount when paying in cash, but they can't charge an extra fee when a credit card is used after the agreement to purchase. Source: http://usa.visa.com/personal/using_visa/checkout_fees/index.html http://usa.visa.com/personal/using_visa/checkout_fees/index....