I'm located in Nagoya Japan, and just purchased two brand new Inon D2000's at the local Dive store called MIC21
You can Google Nagoya Dive Store MIC21 and find their site, numbers etc.
But.... a new Inon D2000 strobe here costs 41,500 JPY which is about USD $ 344. I've never seen them anywhere at that price. They do charge tax if you live here, not sure what their International shipping and/or tax policy is and their English is not the greatest, so you'll have to be a little patient in dealing with them.
Thought this would help some folks out that are in the market for new Inon D2000's.
I think the low price is a combination of made in Japan, sold in Japan and very much the current weak Japanese Yen.
Robert