The gamestop I preorder MK Wii got 160 MKWii, and 130 Brawls...
I do not live in major metro area either, just a decent sized city. I hope for the sake of GTA4 your GS is a small one.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut