Seriously, businesses, go fuck yourself with your $10 minimum debit card purchases. The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 allows merchant's to require a $10 purchase limit for credit cards, not debit cards.
How many times have you purchased a magazine at the checkout aisle because you didn't meet the $10 limit? Or worse, spent upwards of $7 in ATM fees just to take out a twenty dollar bill?
The debit card minimum is a sleazy - and illegal - way to grab a few extra dollars from the growing number of consumers who don't carry cash, all on the baseless claim that merchants are charged a "swipe fee" on all card purchases. The swipe fee, which never exceeds 4% (that's a paltry 4 pennies on a Diet Coke), only applies to credit cards.