Hi;
That depends on a whole lotta factors.
A few pictures would be very helpful. Upload pics to a host like photobucket, copy the img code, and paste it in your next post here.
Condition is crucial. Stored indoors is a plus.
It also depends on your location. Out west, aluminum boats go for more; easier to tow long distances and to high elevations. I’m on my sixth.
Is it structurally sound? Leaks? Transom solid, or rotting? Interior baked / rotted?
If I saw a pic, I could tell you what it would go for, in central CA. That may double, or halve, depending on the demand in your area.
Give us a look, please, and think about checking craigslist or online auctions for comparable sales.
Best of luck, and happy motoring!
Alan / Smokey