I don't know if I buy into the fact that that's the only reason why they're there. But I did have this happen to me. I only took one of a thing that could onl

I don't know if I buy into the fact that that's the only reason why they're there. But I did have this happen to me. I only took one of a thing that could only be charged in pairs of 2. They weren't packaged that way, so I only took 1. The cashier didn't catch it, but the door person did.