Plenty available here in Tokyo. Both new, used and the recent "Factory Outlet" sets. No price range as the exchange rate is all over the place. Any reference has no meaning in a few weeks give the strength of the Yen. If buying from Japan. Sooner is cheaper than later.
And Epson will continue to service this camera until 2018 if I recall correctly. The R-D1/R-D1s shares a lot of similar parts too. So service life is definitely not an issue and in most cases, it's just a CLA or viewfinder alignment from rough handling. There was only once I saw a whole analogue display being replaced to basically restore a R-D1s to a new specification. Even then, the replacement cost was cheaper than the postage for a camera back to Germany. I've never heard of cracked sensor, pinky lines, SD card issue, etc, etc, etc, etc
Cheers,