Very tough to answer the question 'is it worth what they are asking' without detailed inspection.
What kills boat value: *water damaged transom, *water damaged stringers, *water damaged floor, *sun or otherwise damaged upholstery, *mechanical issues with power train.
Pretty much in that order. Mechinical problems are fairly easy to define and repair. And a good long pre-purchase cruise will answer the question if there is mechanical issue. Upholstery is also easily defined and hard to hide. Both mechanical and upholstery problems are potentially expensive, but they are hard to hide if the buyer does due diligence. Rotten wood is tons harder to see and potentially more $$ to fix than value of the end results.
Almost everyone gets bit with the rotted stringers and transom on older boats. They didn't make boats to last year after year unless the owners kept them pristine dry. And that owner is rare. So most older boats have rot. And rot takes a ton of work to fix.
If you want a boat, don't be afraid to keep on looking. The good ones are out there. Inspect the transom wood and the stringer/motor mount wood carefully before even considering purchase. I don't care how good the boat looks, if it is rotten then it is going to take time and money to fix.
The #1 rule in buying boats - there will ALWAYS be another one at least as good quality and price as the one you are looking at. Don't get in a hurry. Not to say don't be ready when your boat comes up for sale. Just know that there will be another one and don't let a seller bum rush you into a deal.