I have a 5HP Mercury O/B that I got as payment when I cleaned out a lady's boathouse for her. Its a 4 cycle, long shaft. No idea of the year but her husband passed suddenly 7 years ago and it has sat since then. Looks near new, stored properly and runs.. started on 3rd pull. A neighbor who knows how I got it wants to buy it. Not sure what its worth and I don't want to price it in such a way that the neighbor thinks I'm an SOB for trying to get top dollar for something he knows I didn't spend cash for (although the dockhouse was pretty crummy having sat undisturbed except for snakes and misce for 7 years). Any suggestions? What I really need is a 15HP short shaft so I will unload this motor.