Castle Shikigami 2 possibly, but I did once see a discount DVD store with tons of them.
I wonder what the print run is on Heavenly Guardian. However, the Wii version probably will prevent this game from ever becoming in demand. Reviewers are also savaging it, which I think is unjustified.
I understand that Wizardry is extremely rare, and I certainly had a hard time finding one, though it isn't late-gen and may never be in demand because it's a dead genre.