Hey Tim, I can answer that one for you, based on my knowledge of John's system --
Folks come by your house. Just like when you would sell any other item you might have in the local classifieds. They want to see and touch and take delivery right then and there. I'm sure he shows them just one set, not the box he has in the garage. And I'll guarantee the transaction is in cash, not checks.
Super simple.
Best Wishes,
Jim Erskine
Homeway Press
http://www.homewaypress.com