These were nice, roomy, well-built little boats. It is thirty-two years old, and priced low. Generally speaking you get what you pay for in a used Hatteras, if you shop carefully. Marathon is a tropical area, so if you look at it, pay close attention to the exterior finish, which is probably sun-damaged, and the bottom, which may be blistered. They are good boats. They are not very fast, but would probably do a little better with modern diesels. The interior on this boat, from what I can tell, looks to have been left original and seems pretty nice.
I guess the thing you really ought to do is figure out what a perfect one which needed nothing is worth, and then figure out what this boat needs to have done to make it what you want, and then look at the difference between the two. My guess is that the world's best 38DC of the first series is worth about 120K with original power that runs fine, maybe a bit more with modern four-stroke diesels, but not a whole lot more than that. If this boat is healthy, then it is easily worth the asking price or close. If not, then you need to figure out the cost of making it healthy.
A repower of this boat would cost at least sixty thousand dollars. Even to overhaul the 53 series diesels in it would be quite expensive and time-consuming. Note that with, for example, Cummins B diesels, she would be a faster, more economical, easier to service boat, by far.
