I use credit cards almost exclusively now for the rewards benefit.I used to do that but stopped.
I buy cat food 3-5 cases at a time so I only need to buy a few times a year. I'm always shocked by how the cashiers have to count the cans (in the original cardboard boxes) instead of multiplying. Then there's the poor old guy who's trying to check my receipt.
I always keep a running total of items in my cart so I can tell if they overcharge me. Sadly, whenever they make a mistake, I have to stand in the customer service line to get my refund.
