Lego Rock Band $44 with bonus

Since this game was announced, I never understood the appeal, but Lego Rock Band is $44 right now. Plus,
Order "Lego Rock Band" and receive a $5 Amazon mp3 credit good toward the music tracks featured in the game. The mp3 credit will be applied to your Amazon.com account within 2 business days after your order has shipped. Must be sold and shipped by Amazon.com to be eligible

If you like cheap gimmicks tied to fake rock games, it's all yours.