I found an immaculate, original owner Miyata 310 from early 80's. It's Cro-moly 1024, Suntour Vx-s derailer and Dia-compe brakes. What would be a fair offer to make the owner? He's asking $250, which seems a bit steep. If anyone knows what this bike sold for back in 80s, that'd at least be a start.