A local stuff shop has one of these at an excellent price (USD 20). Everything seems to work except the rangefinder, which moves erratically. This might be an easy repair, or it might not. Chris Sherlock has a video on IIa rangefinders, which indicates that they are not difficult to access and clean. His particular example camera had a sheared rivet in the arm that connects the lens, so it was a loss for anyone without parts access, but it looks as though most RF problems are due to gummy lubricants or similar causes. As most of you undoubtedly know, I'm actually asking for people to say "buy it", but I'd appreciate any fact-based encouragement or discouragement.