I got it about 4 months ago from Exclusive Helmets in the UK (
http://www.exclusivehelmets.com ), as they seemed to be one of the few places that actually had them in stock. If you order from them and you're in the U.S or Canada, be prepared to pay about $90.00 or more in duty.
The one thing that surprised me a bit was that the helmet is made in China (and here I was imagining it being made in some exclusive fashion house on the Champs-Elysees). I e-mailed the company about this, and they told me that the best supplier of carbon fibre is located there, and this company makes other high-end carbon fibre products (skis, NASCAR helmets, etc). I suppose it's harder to find things that aren't made there now! Having said that, the quality both inside and out is exquisite.
The other thing to bear in mind is that the helmets are not DOT approved - they have European safety specs.
Finally, you may have to put up with the ribbing from your friends about the 'exclusiveness' of the helmet (not to mention your questionable fashion sense), and your potential resemblance to Ultraman every time you don the helmet.
Four months on, I still love the helmet, and don't regret its purchase one bit. As far as value for the dollar (or Euro) goes, I think that's really up to each person to decide. But almost guaranteed, you probably won't pass another motorcyclist on the road wearing the same helmet as yours.