Classicseacraft is a good place to go with this question, but I'll give you my opinion. Pictures would help, but here's my story. I'm assuming it's a 23', and in average condition.
I have a 73, and I bought it in pretty "rough condition", I paid about $3000 just for the hull - which I think is a decent deal - but not a steal. Seems people know that Seacraft's have some value. So , it was like this
I did the work myself, and it took a while, and I put old power on it, but it runs good. I did have to buy a new trailer though. So, bottom line is, now I have about $10,000 into the whole rig as is
So, I think that might give you an idea of an average, rather low budget plan. Just remember, buying the hull is just the beginning. Get yourself a plan, price it out, and see if it makes sense for you.
Good luck
Bill