So you bought a new Xbox 360 S console bundled with Kinect and like many others, you found out that your new camera doodad doesn't come with its own power supply. Microsoft thought you intended to use your Kinect with the Slim and this console alone. However, if you purchased the standalone Kinect or plan to purchase the standalone to be used with old Xbox 360's, the power supply is included.
Microsoft's online store now has a listing for the power supply. You'll have to reach into your wallet for $34.99, if you want one. That's almost one whole fifth of the cost of Kinect on its own but if you need one, now you know where to get it.
You think this was intentional to be left out and make you spend more money or just poor choice or thinking?