The R2S is now sold out at Cameraquest, but some Heliar 50/3.5's should remain according to the site.
I bought the NHS version in 2011, and it is my favourite camera for sure. I'm not sure the NHS-version will get that much of a bigger collector price in the future considering the extremely minor differences between it and the regular version, and thus I have used mine extensively. I've always had the Bessa leather case bottom part on to protect the film door and bottom of the camera, and just recently I have found the first wearing of paint (on the back of the flash shoe).
Some shots taken with it and the Helair 50/3.5 can be found on my Flickr, as well with the Nikkor 35/3.5, 85/2 and Prominent Nokton 50/1.5: http://www.flickr.com/photos/tveljus...7627147298029/