To each his/her own i guess.
Yeah,out of your list,the only one I'm gonna pay full price for is FFXIII.Sorry,but I just have a hard time paying $60+ for any game that's not even 20 hours worth of gameplay,so sorry GOW 3,I'll catch you in the used section.
The Heavy Rain demo was cool and different,but there's no way that this game is worth $60.I'm sure it can be finished in a single weekend.
And finally,neither of the Bioshock games really interest me at all,so I really couldn't care less about them.
I'm really going to be in for it here soon,with FFXIII coming out,plus I still put in a huge amount of time into MAG,so I'm going to pretty much be booked solid for months to come.