I am finding that most the older larger craft with the exception of Trawlers and Tugs are going for pennies on the dollar. 
A fellow on my dock has a 40 FT sailboat. It is in decent shape and well equipped for an early 80's boat. He bought it and tried live aboard in Northern Kentucky.  Froze is.. &(*& off.  He is not a sailor and only took the boat out a couple of times damaging equipment dock, boat, etc.  Decided too darn much work. 
Tried to sell ... no luck so he donating it!! 
He bought a Ranger Tug and will be heading to FL.  (funds must not be a problem LOL)
Nice guy but not willing to learn much about boating, so I am sure another unpleasant adventure will be in his venue very soon ! 
I have been negotiated on a Vintage glass boat. Seller was asking 14.5 but quickly dropped to 8.5 after listing for 6 months. We are still a ways apart and now I wonder if my last offer is still too darn hi with this market.  I was planning on working on her and then sell but might just get stuck with another boat! 
20K and I would let my beloved M go. But that is another story.. 
 
Safe holiday boating, 
dave