Homefront was the same way, tons if used copies on the shelf within a week. Homefront has come back and I imagine C2 will also once (if) it is repaired. I'm using the game as a training session for Brink. The mechanics (jumping, sliding, etc) seem like they will be very similar to Brink.
Yes! Brink.
You would be better picking up Mirrors Edge if you want to train your 1st person free running for Brink. This game is way off that. All Crysis has is ledge grab and slide. Brink and Mirrors Edges movement are so much more in depth.
I dont think C2 or Homefront will hit the highs they should have as it is too close now to other big releases like Brink and Mortal Kombat amongst a few others.
The bad word on C2 and HF is getting passed from people who have played it to their friends. Its a PR nightmare releasing in the state those 2 did and it doesnt just damage sales of that game, it damages the whole franchise in sales of future releases as people will remember. There is a quiet patch in the summer where publishers dont release games so maybe then they will see a slight resurgence. That is the best shot Crysis has and it is a few months away.
Good I hope it bites them in the ass for releasing an unfinished game.