The Sofmap in Nagoya station had a few decent deals on Wii games -
Zelda - 3900
Necro-Nesia - 1900
Fire Emblem - either 2900 or 2400 (can't remember)
And some more for 2900 and under.
Xbox 360 -
Shutoko Battle X - 1900
All Platinum hits - 2400
And they have some used Asia Xbox 360 games...