I don't have any prices figured out yet.

I have some more additions to my list:

Sonic Riders 2 PS2 11/30/07 review
Sonic Riders: Zero Gravity PS2 10/16/07 preview
Sonic Riders: Zero Gravity Wii 10/16/07 preview
Sonic and the Black Knight 02/02/09 Comic Con NY

http://trash.drx.pl/collection/sonicswii.jpg