TOPIC: 1960 Mercury 400EL

I have a nice running 400EL (electric start, long shaft) that is attached to a boat of somewhat questionable value. See Classifieds. What I am trying to ascertain, is what is the approximate fair market value of this motor? It is unrestored, but runs strong and I believe has relatively low hours. I bought it on a salvage boat several years ago and got it running. Boat had been sitting with a bad starter since the early eighties according to the last registration. Looking for a good home for this motor.