This deal has ended.
Likely for today only, Amazon has Guitar Hero World Tour (complete band kit) on sale for just $119.98 for either PS3, XBox 360, or Wii. This is easily the lowest price available online. Along with the game itself, this includes a redesigned guitar, electronic drum kit, and a microphone. Shipping is free and there is no sales tax (except KS, KY, ND, NY, WA).