I bought the PS3 version at launch, and I'll be in once the 360 hits $30.

Super version is pretty much all but confirmed, but I expect it to be out ~1 year after the release. So we still have 8 months to go.

The single player content in this game is minimal, and I expect the price to drop heavily by end of this year. However, I play enough of the game online to make it well worth my purchase.