I don't see the harm in this Marc Newson case. These kind of limited edition items are just a kind of publicity stunt. If it gets their cameras mentioned in some magazines outside the camera world and sells a few more K-01s, it's quite smart marketing. You'll notice that they release these things separately from the cameras to get another mention in the press a few months later. Besides, if you think this is expensive, you should see the limited edition pink Loewe Pentax Q case.
http://dc.watch.impress.co.jp/docs/news/20120423_528673.html
Yes, that is a pink camera for 69,800 yen, a little carry case for 82,950 yen and a lens case for 66,150 yen. I saw it in a department store. I guess a few people with more money than sense will buy it. It gives Loewe a novelty item to display. For Pentax, it gets them noticed by people who wouldn't normally go into a camera shop.