What would be a fair price for a 1973 70 HP Evinrude model 70673D in very good to excellent condition? Engine is mechanically sound, electronics are good, no leaks, has not been overhauled or repainted. All three cylinders came in at 140-145 PSI on the compression test. Cold starts nearly instantly, idles and accelerates smooth. Cosmetically, I'd grade it about 95% +. Not a single scratch or ding on the lower unit and skeg. Comes with all controls and a stainless prop. Fresh water use only. No, I'm not trying to sell, I'm looking to purchase this motor and would like to know what a fair price range would be for this model in this condition.