Guitar Hero 3 for Xbox 360 $5.72 January 24, 2012 This post may contain a link to an affiliate. See my disclosure policy for more information. Wow! Currently, Amazon.com has Guitar Hero III: Legends of Rock for Xbox 360 marked down to just $5.72. This retails for $30, so this is a steal! Hurry and grab yours before they sell out! This item ships for FREE with Amazon Prime, or on orders of $25 or more with Super Saver Shipping. Thanks SwagGrabber!