I just walked into a Best Buy in NYC (Lexington Ave and 86 Street) looking for a D800 (they laughed) and they had five (three not yet spoken for) Mk IIIs in their inventory. If someone's looking, you might give them a call or drop in if you're local. They said they're steadily getting in 2 or 3 each week.
it involves a series of steps, it's not a direct order for $3150, and includes having a certain credit card (to get it that low, you can get it partly lower without the particular CC though), might be expire by now or a certain catch might not work out for some with order method and points, etc. sent PM