When I came across this, in 2007, I was not familiar with any tube equipment, but knew I shouldn't walk away without it. It was sitting on the driveway next to children's clothes, with no price on the box it was in, and far from the sales table. Clearly, no one there had any idea of the value - and neither did I. My brother asked someone to come over to tell us how much it was and when they said "3", I asked him if they meant $300 and he told me "$3", so I got it. Because I had no smartphone to try to get some sense of its worth, if they had asked for anything over $30 or so, I would not have gotten it. A truly dumb luck find.
Or good instincts For a 7C I would give up remote control.