I got checked out by a clerk at Costco - he missed a large jug of clothes detergent which was picked up at the exit by the employee checking the receipts. Our line was held up while they tried to figure it out. We told them to keep it but those that didn’t know what was going on though we were trying to pull one over!!!!
NOW - if I had checked myself out, I could have been accused to shoplifting, especially if the woman let me through to see if I would leave with something I hadn’t paid for. We had gone through the line with the checkout clerk which took the blame off of us - eventually it was taking so long that we just told them to keep it and left without it.
I use checkout lanes as much as possible to avoid a mistake on MY part and ending up being arrested for shoplifting.
The Costco employees want to take over and "help" but no thanks.