I really looking foward to Rock Band and guitar heros 3. I figured that guitar heros 3 is going to cost $90 like guitar heros 2. Rock Band i think it may be priced $150 but it seems to low for what you getting. If its $200 or higher ill get it really later.

Just wait for an official announcement from EA.
In a recent interview on a French gaming web site, Red Octane boss denied the rumored 150$ price, so wait & see...

I hope not. If Rock Band is over $100 i'll be sticking to Guitar Hero no matter how many extra features it may have.

OMG it better be the best game i'll ever play for it to cost 150$

Wait, Guitar Hero two was 90 bucks.

guitar heroes 2 on 360 was $90

And the guitar alone is (if you can find it) 60$.
Insane...

The Guitar Hero guitars will be compatible with the Rock Band game.  I think they'll offer bundles and the game alone.  Then, you can buy the drum set and other guitars seperately.  Oh, and the mic I guess.  I hope the bluetooth headset I'm getting with Warhawk works for that.

the 360 guitar works for Rockband but the PS2 not conformed