Checkout lines are funny creatures. They stock them with impulse items. You usually see an array of candy, chips, soda and the like. The instant pleasure has to be relatively cheap and designed to not engender too much guilt.
The hardware store isn't all that much different. My local store, Joe's, usually has all of the above plus flashlights and a cheap cut rate tool bin maybe.
I think that this is a first. Wipe away!