I imagine if they can't supply the receipt from the person that made the original purchase, it may be grey merchandise. They may resell grey merchandise providing their own receipt.
12-03-11: Djohnson54
Here's another angle on this discussion. What's a person who bought new SF product supposed to do with it if they buy another SF product? Stick it in the closet? Are all SF dealers willing to take used equipment bought from them back in on trade? What do they then do with the used equipment; sell it used? Will SF warranty it then?
They may like the idea if you throw your present gear away. I guess they don't see it as free advertising having a lot of products out there, with people talking about it.
It sounds like they want us to buy their products, make the profit, and do their police work. This isn't counterfeit merchandise. The company that makes the products should do some work helping out. They are a big part of this problem.