It is very expensive but $100 for the full band package is ridiculous. $60 for the game plus $20 for the USB mic plus $40 for the guitar plus $60 for the drums is $180 already. And the drums probably cost more.
You guys need to lower your expectations if you think they're gonna sell you a USB mic, a wireless guitar, and wireless drums all for $40-60. The price sucks but the value's alright.
# of games above 75 on Metacritic (including downloadable):
360: 241 DS: 144
PS3: 152 PSP: 126
Wii: 85