Allen''s advice is good. I have a 1976 C-22. Based on the description you provide, I think the price is very fair.
I would start by asking how many times the mast has been raised and lowered. Then I would check the condition of the standing
rigging. Raising and lowering the mast can have an effect on this
rigging. I''d check the foredeck for any soft spots (delamination), and ask if the boat leaks anywhere (from deck fixtures). Check the condition of the gaskets surrounding the four cabin portlights. Based on my own experiences, I''m surprised that the keel cable has lasted since 1995. Look at the keel
winch for rust and/or corrosion. Since it''s in the water, you won''t be able to see the condition of the keel or how it attachs to the bottom. You might ask if he''s willing to haul it.
I would also ask to see the mast, cabin, and running (navigation)
lights in operation. You can check the condition of the wiring going to the nav
lights; the mast light wiring, at least on my boat, runs down inside the mast and out at the bottom to a deck plug. Check the
radio.
You don''t say how old the outboard is but if it''s a four-stroke, you''re probably OK. You might want to ask about any overhaul or repairs on it. I had a 9.9HP Johnson two-stroke on mine, but a lower HP four-stroke can be just as effective.
Even though the price is low, you may want to get it surveyed to assure yourself that you won''t have to put out any major expenses for repairs.