+1 if you can wait it out another 10 months, they may do a crazy deal again. Just this past Black Friday, I got a brand new HD 650 from SennheiserUSA.com for $340 with a $50 iTunes gift card. After I sold the gift card, it ended up at $290 for a brand new HD 650.
Best $290 I've ever spent on this hobby.
Edit: Also check the Deals Thread here. That's how I got mine dirt cheap. Right now people are talking about a Razordog deal here it's $50 to $100 off any headphone over $250...may bring those HD 650's down to the price you want...
Edited by dxanex - 2/9/13 at 6:52am