yep the 6700 @sprint was $600 - then $550. New customers or people out of contract could get it for $250-300 w/a 2 year contract, and there is still a $100 rebate on it. So your final cost is $150-200 (amazing, really, for this phone/PDA - heck it's not a bad price for just a PDA with these specs)
The 6800 will probably follow the same price curve. It will be in the $600 ballpark with $100-150 off for new folks or people out of contract who re-up for 2 years. That price will hold for at least 9 months. After that it will drop in half as the next model rumors start