Conclusion: It's selling at around $30 new at this point which I still think is a bit high for a 4 year old game. But you can usually find it cheaper if you look around. The price seems to have rebounded a bit over the last year.
Excerpt: Tetris has been known in the video game industry for a long time. Most puzzle games are compared to Tetris in one way shape or form. Tetris Evolution on the Xbox 360 is a traditional take on the classic series. I found nothing in this game that supports the disproven theory of evolution.