Original poster here. Interesting to read the varied responses and individual preferences. I have read Voyaging Under Power by Beebe and Caulder's Boatowners Mechanical Manual (well I have read parts of it) and for my needs, I think a Long Range Cruiser is the right Hatteras for me. Displacement speeds will do just fine, thank you.
Returning to the original question, if anyone is familiar with this boat, it appears no one is.
Some have certainly posted what they think the value may be, we have a range of opinions from $0 up to $60k. Again that is expected with limited input.
So here is a summary of my discussion and information:
1980 Hatteras 42 LRC has an average retail value of $99k - $110k
Assume this boat needs a new generator ($15k), all new seacocks, seals,hoses etc($10k), bottom clean and paint ($8k), interior work ($10k), deffered maintenance such as change all fluids, filters, impellers Etc ($5k), batteries and electrical work ($5k). Rough estimate puts the value at around $55k.
Now the big question, because a sea trial is not possible, what could a blown tranny, engine overhaul, running gear problems, etc represent as a possible cost or should I say potential expense? Remember an engine survey has been completed in the slings with a clean bill of health (for what it's worth).
How much does a tranny rebuild cost? How much for an engine rebuild? I think I can safely assume the worst case, price in that cost and make an offer. Thanks.