Yes, they are.
I got bored with Condemned, although I did enjoy the first few levels for sure. Very moody.
Boz - I don\'t buy a lot of $50 games, either. I only pick up a lot of games at launch, and then later on if I really think I\'ll get my money\'s worth. I don\'t play enough to be throwing away all that cash, personally.
In the case of Guitar Hero, I\'ll spend more because it\'s worth it to me. Haven\'t been able to talk myself into GH2, though, since it hasn\'t changed much.