I bought a 1999 2520 w/ trailer, no electronics, had rocket luancher and out riggers, last fall for 18,500. Sold the trailer for a grand.
I totally tricked it out w/ a Ray marine E80 radar,ff, plotter, interior rod racks, wash down, lighting, satilite radio, stereo blah blah blah and still am right side up on the boat.
Offer what you will and if they take it great, if not they watch the grass grow on the hull and wish they took the offer.
Right now it is REALLY a buyers market on boats and you should get a great deal or don't buy.