If I was rich and looking for a fresh Mark to modify the hell out of then I would consider 25k for a sub 1000 mile Mark. BUT it would have to be the right color combo and have a moonroof.
Lets face it, metal fatigues over time and no matter how much work you do to your Mark to freshen it the chassis will still be a chassis thats been twisted and bumped and flexed for 15+ years.
Also on that car as soon as you started really using it the air ride would fail. Bags have to be very dry and when you start flexing them again they will crack right away. Calipers should also be rebuilt, flush the tank and lines, new fuel filter, tires are worthless..... car will need a couple grand to be like it is now AND drive regularly.
That CE that shows up from time to time that still has the plastic on the door pannels and seats is one I would buy just cause it has all the coins and stuff and its only got like 200 miles on it.
I dont mind prarie tan interior and like it on the Cordovan. Sure black would be nicer but alas there were no CEs with black interior.