Not a good game, but the collectable items are still decent. The CD and art book alone probably already worth the $10 over the regular edition:
http://www.ebgames.ca/xbox-360/games...edition/312401
http://www.ebgames.ca/ps3/games/ninj...edition/312400
http://www.ebgames.ca/xbox-360/games...edition/312401
http://www.ebgames.ca/ps3/games/ninj...edition/312400