How to determine accurate price to offer on used Yamaha outboard motor -?

I am looking at a used 1994 yamaha 8 hp tiller long shaft outboard that seems to be in very good condition and not used hard, low hours - It starts and runs well - how can I figure out what is a fair cash price to pay the seller for this engine? Need some help on this one. I already looked at the NADA marine price list for boats %26amp; motors, and it said the motor was retail value 1300-1400 dollars which I thought was too high for a 16 yr old 8hp motor. Was trying to get a more realistic market price that is fair for this motor - I also googled "'94 yamaha 8hp for sale" in hopes of seeing some asking prices but struck out on that search... If anyone that knows what it would be worth (fair price) please let me know. Thanks alot.|||Well my grandpa works at a marina and he told me that a good price to offer for that would be around the 800 mark. Its not much but its still something! Hope I helped|||check kijiji, also brand new is usually $300 per horse so $1300 isn't bad