What's the cheapest combination of Guitar Hero/Rock Band instruments?

[Crashdown77]

MontanaHatchet said:

Crashdown77 said:
You can find an original Rock Band set for around $90 still, some places are clearancing them out. But I find the guitar to be pretty shoddy. The drumset is great, but everything is wired. You do want to have a good quality axe though, and I find the guitar hero world tour one to be the best. I am a complete nerd about this BTW, if you need any other rhythm game info, hit me up.

Thanks for the help. Are the guitars and other instruments for all the games compatible with each other?

This is the best place to check for compatibilty:

http://www.joystiq.com/Instrument-Compatibility-Matrix/

By the by, I am so stoked for Beatles Rock Band. From the look of it it's fan service at it's best.