badgenome on 01 November 2012
Never. It costs money for a company to process credit card transactions, so they usually have a minimum transaction for credit card purchases. It used to be against the rules of Visa and Mastercard to do so, even though a lot of merchants did it anyway, but under Dodd-Frank retailers can now require a $10 minimum.
So be thankful it's just $5, ya whiner!
