Fred
About 12,000 euros/GBP is about right for the 50 MP. As to "does it work" - well, as you know, almost every picture I have posted here in the Critique section has been taken on the CFV-39. So if you check back through those pix you can to some extent judge for yourself, or at least as far as you can judge anything from a small jpeg. All of them were taken on very old Zeiss 'C' lenses, with no DAC or any nonsense like that. The CFV 39 and 50 are exactly the same except for the sensor, of course. In use, they are brilliant - you just use them exactly like a film magazine. No sync cable, no messing. Slap it on, choose your ISO, and shoot.
John