Review of the Full Action Model Chamber:
http://blog.livedoor.jp/hacchaka/archives/51948035.html
I bought it too, and it is kind of funny that it's one of the few that got questions from the co-workers thanks to the rings.
It's quite big, comparable to a 1:100 Gundam
But the box is way too big, most of the space are empty.
I got it from Mandarake-fukuoka for 14500 yen + 2050 yen shipping to Canada.
______________________
And some news: Max Factory is planning to release a 1:48 Chamber model:
http://hobby.dengeki.com/news/75546/