I was just at the Best Buy in Eastvale, CA (Mira Loma), and they had two HERO HD 2 open box for $169 each. Not the best price, I know, but if you live nearby and want instant satisfaction, give it a try. Best Buy has a great return policy, at least from my experience. They just don't honor their extended service plans.
**Please note that this is only at this location, and may not be at any other Best Buy**