I have tried to find a ball park price on a 50hp merc. I live in Aust. and looking through want add and for sell add. with no luck. The Motor I belive is a late 1970 model a blueband.It runs great. can't fault it. But I can not find any information on this brand of motor. So if any one has had any thing to do with this motor, can they please advice me Yhanks Don