He is a principled guy, BTW.
Three times this year, I've gotten home from W-M grocery shopping, to find that the cashier failed to charge me for the case of Diet Coke underneath the basket, even after I have pointed out to her that it is there.
Three times this year I have clipped the upc from the case and on my next trip to W-M, I go to the service center, tell them what happened and have them ring it up and I pay for it.
It is embarrassing to me to hear them gush about my "honesty" in the matter, when it should be the normal reaction of people. It would not occur to me to do otherwise.