Dude, i used to work at a gym where we had a separate credit card machine where we were charged on the total of the day rather than each separate transaction. This was as close as last year at this time that i worked there. The small business owners scam their customers into using their ATM because they charge you a 2-3$ service fee which about 50% of that goes directly to the owner. The reasons i use my debit rather than cash are A)it's safer to walk around where i live without cash, and easy relatively to cancel your card if it gets stolen. B)I get 1 dollar transferred to my high yeild savings every time i make a purchase with my card. 5% for a year in savings.

4th paragraph down... "Did you know that retailers aren't allowed to set a minimum purchase..."

Credit card purchase minimums