As above,
You cannot buy it in the UK, but its pretty cheap to import from the USA or Japan, Audiocubes stock it.
After looking online i found this review:
http://i4u.digitaltrends.com/review3543_main17723.html
Looks pretty decent, so i managed to get one off ebay about 1 hour ago for £62 delivered. It can take an AC adapter as well.
I have tried so many wireless headphones and the best ones by far are the Philips HD1500 (which i use downstairs hooked up to a home cinema system) but i want something upstairs to use on my computer (Apple Mac Mini).
If you have this already, whats the sound like? Any good? And what have you compared it to?
I will post a review and photos when i get one.