TSC had sale on 6 volt batteries and 10% off coupon, so I bought two. New girl at register tried to scan them twice, I was talking to someone in line not really paying attention, scanned my credit card and left. Got to the shop and realized I had only payed for one battery, one did not scan. I could have forgot about it got a free battery but I'm honest and have been on the other side of the situation. I went back to pay for the other battery, girl was appreciative but she was the only one, seemed too much trouble. By the time I was done (it took a while) I was sorry I went back. No one else said thank you or offered an extra coupon or any incentive for the customer to be honest.