Of course he wants to sell you such a thing because there is probably a 1000% profit margin and whatever he sells it for probably nets him 30% commision.

These things and cables are basically the same as aluminum siding and rust proofing on cars were in the 50s -70s.

One reason these things have become so huge is that all the electronics don't have enough profit in them to make them even worth selling.

A store here had a salesperson that told me that the store makes no more than $30.00 on a $600.00 television..after they pay their employees and paperwork $30.00. They make more profit on a $60.00 cable than they make on a $600.00TV.

No wonder he doesn't want to let you leave without absolutely getting you to take that vital device.