As far as I know very few retailers are actually accepting preorders for this...
Also there are only 15,000 bundles initially so you don't know how long they'll last...
Edit: That 15,000 I read it somewhere but can't find it again so take it with a large grain of salt.... (i.e. probably wrong)
Edit 2: It was a post on NeoGaf from someone with inside knowledge saying that the initial allocation is only 15,000
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).