@TWRoO: I can't speak for others but I never sell anything. I just give away games I'm not interested in anymore. I gave my Xbox along with all games I owned for the system to a friend of mine a few weeks ago. So no money from me, sorry. 
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I made a list now with the 10 games I allow myself to buy next year:
Confirmed 2010 releases:
- Heavy Rain
- Red Dead Redemption (PS3)
Likely 2010 Western releases:
- Dragon Quest VI: Realms of Reverie
- Dragon Quest IX: Sentinels of the Starry Skies
- Super Mario Galaxy 2
Unsure 2010 Western releases:
- Golden Sun DS
- Ni no Kuni: The Another World
- The Last Guardian
- The Legend of Zelda Wii
Unsure if it ever will be released:
- Ron Gilbert's DeathSpank (come on, Ron. Make it happen. Fauler Sack!)
(plus any new, still unannounced game from thatgamcompany and any LucasArts adventure game remake, as they are exempt from my 10 games rule by default)
Essay Pro