Pending ...
Negotiate a price first. The offer should be Pending Haul-out, Survey, Rig Inspection and Sea Trial ... in that order.It gives you the option of walking away at each stage.The surveyor should be present for the haul-out. If you see something gross like the keel falls off or the rudder bent 20 degrees or huge blisters, you pay the surveyor only for their travel time and the yard for the haul and walk away.If it looks ok, the surveyor inspects the boat and sends you a report.Take the list of faults (if any) and get an estimate of repairs. The seller has the option of reducing the price or making the repairs. Any repairs that are needed for the boat to be insurable are the owners responsibility, other items can be negotiated.If you still have a contract, get a rigger out to survey the rig (many surveyors only do a visual from the deck). Negotiate the costs of any needed repairs.Finally, do a sea-trial. Make sure that you like how the boat sails, motors etc.A 1990 boat is 15 years old. It probably should have new standing and running rigging and other things like hoses and engine drive belts may be at the end of their service life.You should be able to reduce the price by the cost of needed repairs and maintenance. In many cases the price comes down buy much more than the cost of the survey and inspections.