If it should turn up again real cheap, it might be worth buying if the countershaft parts and maybe all of the guards are present. Those are parts that are frequently missing. If the next one that you consider buying isn't missing part of them, someone else soon will. And, assuming that they are present/intact, the back gears or the BG operating lever are frequently either missing or broken. As a gold donor, you can list items for sale in the various For Sale Fora.