MS spokesman said that he already knows the price on GT. I believe they have not anonced it to keep you more hyped and see oreorders feedback. And if preoreders will be low they will put price down a bit. Maybe they waiting for gamescon for anoncment or something.
Play my LittleBigLove level: search keywords "LittleBigLove realil"
LJ (Russian): http://realill.livejournal.com