Its too much of a monster to be priced at $300, and you cant consider it mid range when its the best card on the market. They are pretty much sold out on launch...at $300 they would have been sold out before people could finish reading the reviews. Imagine when the next "true" high end part comes out...
To be fair, it is STRICTLY a mid-range product from Nvidia.
That it can be easily positioned as a high-end part, and that they have done so (and priced accordingly) is simply a move to jump on the opportunity. It's priced competitively, and Nvidia (and partners) stand to perform quite well financially due to such a decision.
Hopefully AMD can push prices down (it's their move to make - Nvidia has no need to do it considering they have basically the top card on the market now) and, more importantly, push out better performing parts.
I have no desire to see a $700+ single-GPU card, which is likely the route Nvidia will go if they decide to push out their top-end GPU and AMD hasn't changed the pricing game at that point.
Hopefully they don't hold onto that part until the 700-series. That's the card I want to replace my 560 Ti Sli (2GB models) setup with (single-GPU would be great), but dammit, AMD screwed the pooch and I can't blame Nvidia for simply falling inline with what's out there now. They have a part destined to crush the competition, but no need to take on lower profit margins if they can compete with their otherwise mid-range part.