I've been watching this guy for months now. Everything he sells is either brand new in the box or "just opened". He is obviously in cahoots with a dealer and selling the stuff below manufacturer retail to skirt the dealer agreements.
The days of fixed prices and 50% retail markup for high end audio products are numbered. There's no reason to pay those markups anymore given the lack of retailers. The manufacturers need to get a clue and just open things up to the internet and free market. Then prices will plummet. In the meantime, people like this will service the real market. It's unethical, but it's the fault of the manufacturers and distributors.