By the sounds of it, the headset will sell lots of bundles. In the UK the headset is selling for £18 at play.com and the bundle for £30. That's even cheaper than a new release on its own...
I preordered mainly for the headset but if the game is good as well then I may give it a try.
PSN ID: T_Gears
End of 2009 ltd sales:
Wii = 67-68m
X360 = 38-39m
PS3 = 34-35m
Prediction: The PS3 will surpass the 360 on weekly sales after it drops to $299 on all regular weeks (no big releases).