But the OP also admitted he had no particular interest in sales - a cue to the huckster that he was dealing with a clueless innocent who could easily be manipul

But the OP also admitted he had no particular interest in sales - a cue to the huckster that he was dealing with a clueless innocent who could easily be manipulated by the tricks of the trade. This leaves open the question of why the OP approaced the salesman in the first place.