I bought the GS645S Wide 60 I have now from a seller in Japan via Ebay, recently. It arrived in less than a week after the sale closed and was in the condition as described. The rangefinder was a bit sticky, so I sent it to Frank Marshman: he did a complete overhaul for a very reasonable price. The camera works beautifully and makes extremely nice photographs ... This is my second GS645S, and I'm glad I went for it again: a very nice camera and not too bulky like the larger format cameras.
The original GS645 folder is a bit problematic to me. I had two of them in ages past and both developed problems with the bellows and shutter release multiple times requiring repair.
For a compact medium format folder, I now have a Voigtländer Perkeo II that is a delight: light weight, folded, it fits in a jacket pocket, excellent Color Skopar lens. It doesn't have the rangefinder or meter of the GS645, but I've found it to be much more reliable and just as good with respect to the quality of the negatives it makes, and I like the square format too.
I suspect something like that might prove easier to find in Germany at a reasonable price, in good condition. Mine was in okay condition as purchased (I believe the seller was in Austria), but the automatic film transport was a bit funky so I had it overhauled. It works perfectly now. I just acquired one of the Voigtländer Kontur 6x6 viewfinders for it; makes framing much more accurate and is easier to use with glasses than the small optical peephole finder in the camera.
G
