I think it's hard to put a price on boats in this market.Fotunately Seacrafts are more sought after and demand a higher price than lots of other brands,so you have an advantage there.
I agree with most of the other replies,more info and pictures would be helpful.Lot's of stuff like trailer condition(if there is one)and a little more details of the overall mechanical conditions is needed.
I can't even imagine ever selling my 74 Tsunami.I'd sooner have another angioplasty than sell the love of my life.
BTW Rod,(Floorboy) the boat looks great.you got a super deal on that one.
I paid $1,000.00 for mine in this condition,15 grand and three years later it's now basically new again.