How much is a 1984 v 20 worth?

Someone may sell me a 1984 v20. It is in excellent shape. He had the transom redone and replaced with a fiberglass one-- no wood! He also has a new fuel tank. The old one leaked. The trailer is a double axle in good shape. It is not a cuddy cabin or center console. It has the double console. The bow and aft are open. It comes with a 1998 Merc 200 efi that does not run. How much is this boat worth? What would you'll pay for it? It has always been under a roof when stored away. Any help is appreciated!