I hate to be the bearer of bad tidings, but Amphibico's owner has shut the housing manufacture operation down, and is not seeking to sell it.
I quote from an email from him:
....because we are closing up Amphibico now. The market has changed so severely, new camera technology in the video camcorders has not kept pace with the DSLR's, spending in the market has decreased hugely and I would have to invest very heavily in new R&D to see returns only in 3 or 4 years. I just turned 64 so I'm not interested in doing that.
There is still a ready second hand market though-I would suggest posting ads here on Wetpixel and on other underwater videography oriented sites.