Need pricing advice for trek 620.
I have an old trek 620 touring bike, grey/silver with light blue around trek logo.i believe it is form 1983 or 84 it is a 52 or 54 cm frame, it is in poor to decent cosmetic condtion and in decent to good mechanical condition, the rims are original 27 inch, but needs new tubes, tires, brakes, chain, tune, etc. cassette, chain rings, and derailers seem to be in good shape. has three chain rings. Has fircition dowtube shifters that may need to be replace but not quite sure. Not ready to ride, suitable for a project. How much is a fair price to ask for it?