I'm not so sure, they are not selling anyway because of the terrible reputation we have and the website and the EXTREMELY poor customer services. He might be reducing the price to appear like he wants them to sell but in reality he knows they wont sell even at 899USD.

And the Prospector is still at 2k so they definitely WILL NOT sell.

EDIT - The remaining 163 500GH/s cards have clearly been priced above the market so that they will not sell. They are over 1kusd more expensive than out Gold 750GH/s cards. Ken must be mining with them for his own coin. Vince said his board had thermal paste remains on it which may have been a burn in test or it may have come from Ken's private farm.