DJ Hero, which will be released on October 27, 2009 with a new peripheral, is currently being listed for $119.99 at retailers like Amazon and GameStop. There's a chance this isn't final pricing, but that's the information we're operating on for now. The big question: would you pay $120 for DJ Hero? That's the price of two games!
Don't expect a software-only version for $60 until DJ Hero 2.
Personally, I'll pay up because I'm a music game dork and was really impressed by DJ Hero at E3 2009. I'm still holding out hope for a PS3 compilation release of Beatmania IIDX with a new peripheral, though.