Price of secondhand 140 hp Yamaha

[crankcasy]

I have just re powered my 6m plate boat with a 175 hp Suzuki and want to sell the old motor with controls can anybody give me an idea on what a good price to ask would be
Its a 1996 140 hp 2 stroke long leg with all the controls plus hydraulic steering motor still in good condition and runs well.

Regards Scott