A similar device (see link below) has been available here in the UK for at least 2 years at, strangely, about the equivalent price. I say strangely because normally whatever the price in US Dollars that will be the same figure in UK Pounds thus making an item around 50% dearer.
I use a version for my Sony TG3 with very good results.
- anyone seen something similar for Samsung Galaxy 2?
The SG2 records stunning 1080p video (so good in fact, I couldn't believe my eyes the first time I displayed it on my 50" plasma)- but of course, hand- holding it steady is impossible :)