If anyone's still interested in this game, Dell's having a 24 hour sale today and Banjo's been discounted $10, selling for $28 total ($25 + tax with free ground shipping).
Click on the Electronics and Accessories tab on this page and it's about halfway down, only game in the list (well, there's a $350 Wii bundle too).
Click on the Electronics and Accessories tab on this page and it's about halfway down, only game in the list (well, there's a $350 Wii bundle too).