^ Well they play the law of averages. If they present the demo to 100% of the people that walk in (which I hear they do but they never ask me ) and say 60% of them take the demo and maybe 5% of them buy, that is still decent sales.

That would make 3% of the total number of people they ask to take the demo into buyers. Even at 1% it would be good sales considering the markup on those things.

And I don't know about you but at LEAST 3% of the people I meet are complete morons so I'm betting they hit that target easy