We spent 3 weeks looking for GHIII for the Xbox 360 - we called the 8 Gamestops within a 75 mile radius every morning at 9:50 to check if they got one. I finally scored at a GS 50 miles away, the clerk gave me 2 hours to get there (I made it in under 1) they received 7 calls during that hour and 3 while I was paying for it.
I paid $107.00 for the bundle
I got the wireless bundle and at the same time picked up GHII wired for DD so they can play together.
My best advice would be to check all options every morning.
Good luck