For in-store pickup only, Kmart offers the Microsoft Xbox 360 Wireless Bluetooth Headset, model no. 22J-00001, for $9.97. That's $10 below our July pickup mention and the lowest total price we've seen for this model. (It's a current price low by $17.) It's compatible with Xbox LIVE and Bluetooth-enabled devices and features ear gels, an ear loop, and up to 8-hour battery life.
Amazon offers the Xbox 360 E 4GB Kinect Holiday Value Bundle bundled with a $50 Amazon credit for $249 with free shipping. Assuming you'll use the credit, that's the lowest total price we could find for this bundle by $50. (For further comparison, we saw this bundle for $49 less bundled with Halo 3 on Black Friday week.) The console bundle features a wireless controller, 4GB hard drive, Kinect Sensor, Kinect Adventures, Kinect Sports: Season Two, and 1-Month Xbox LIVE Gold Membership.