Newegg has the Turtle Beach Ear Force XLC Stereo Headset with Mic for free with free shipping
after a $12.99 rebate card.
The Ear Force XLC is ideal for cost-conscious gamers who want to enjoy improved game sound with their XBOX 360. It combines high-quality stereo game audio with XBOX LIVE chat, eliminating the need for the mono communicator and external speakers.
The unique noise-reduction ear cushions help block out distractions, so you can concentrate on the game, enjoy the full impact of the stereo sound from your XBOX 360, and become a better player.