Being sold at limited availability via 21 specific Microsoft Store locations across the United States, Microsoft has announced the cheapest Xbox 360 Bundle (including Kinect!) ever conceived with this new $99 Bundle.
Included is the Xbox 360’s motion-sensing camera and microphone peripheral the Kinect Sensor, along with a 4GB Xbox 360 Elite system and harddrive, 1 Xbox 360 Controller (black) and the Kinect Adventures videogame. Of the Kinect bundles on offer, this is the lowest-tier featuring a sad and pathetic 4GB harddrive, as opposed to say a 250GB behemoth.
Going this route, you will get the system much cheaper upfront, but pay more for it in the longrun. You’ll end up paying $460 as opposed to the $300 or so it’d cost you to buy this same Xbox 360 Kinect bundle outright. A 250GB Xbox 360 Kinect bundle meanwhile retails for $400. Additionally, if you want to cancel the contract, it’ll cost you $250 during the first 3 months and scales down to $12 during the 23rd month.
If you want an Xbox 360 quickly and cheaply with Kinect included, this may be the best route to go. Although you can probably find a better deal by looking into used systems.
Here is a gameplay video of Kinect Adventures for Xbox 360 Kinect.

