Arthur,
Sorry if I insulted your intelligence, not my intention. It's just that being in the fix and repair business, I've seen all sorts of 'wonders'. Like the guy who stooped by with a pellet gun the other day. Said he bought one with two barrels one a .17 the other a .22. He couldn't make the 22 work....using RIMFIRE ammo. Or the red dot scope that was on BACKWARDS. etc, etc. I no longer take common sense as being all that common.
Recently saw an electronic scale advertised for less than $30 just can't remember where. (could have been at Cheaper Than Dirt?)