I usually never bother with this kind of stuff, but consider
Signing this petition:
http://www.petitiononline.com/mod_perl/signed.cgi?GHIIDLC
(over 800 signatures and growing fast)
and Digging this:
http://digg.com/gaming_news/Guitar_Hero_1_will_cost_you_97_76_at_this_rate_on_the_Xbox_360...