Yes Joe... I did ONLY PAY $4000 for the boat...as was it's condition then. Now..after close to about 12-14K worth of "improvements"... to include in fairness a brand new aluminum trailer and a "newer" 2003 50hp Suzi 4 stroke still under warantee.... and a very tricked out custom camper canvas... I am back to almost $20K range for this neat boat. Yes, it is a bit special to me due to being a classic, and, it is the last 18' C-Dory made. We do need to be careful when telling what others paid for the boats...often, like this case, others have no clue on follow on monies spent.
Same deal with my ORIGINAL 24'TomCat. Most had no idea I spent an additional 8-9K on her gettting her "long cruise ready" rather than a real nice day boat. At the same time I agree with the two TC's being two radically differant boat "platforms".... but, basically the same Cat hull as far as ride/comfort, and a VERY LARGE differance in OVERALL IN THE WATER WEIGHT AND THE POWER NEEDED TO PUSH HER. Less power needed to push the original, less tow vehicle needed to tow the original.
Again, before I spent the money on a new CD25....for sure another great option for a boat would be the original TC24. Even the older TC24 has much more cockpit room than the CD25. It is a great boat...but make sure you pay attention to the trailer set up for sure.