That is a significant problem with C bodies, despite our collective views otherwise. To the general market most of our cars are not worth investing in to resell them because there are few buyers with enough love and more importantly, money, to buy them when all is said and done.
The previous owner to Wyatt was told by the person he bought it from that these Monaco 500s were highly desired vehicles by the C body crowd, and went ahead and bought the car thinking that was the case, but when he went too far with the project, he then learned that while these cars are desireable to the true believers, most folks these days don't have sufficient funds to buy cars in which a lot of investment is poured into them despite how desirable they are to folks like us.
More recently I have been fixing up and selling some of my favorite cars that I will never get to and I am finding out that it isn't worth the investment as I can not get any return on my investment any more. I just wanted them to go to good homes and not be lost, so I spent time and resources on this endeavor, but not any more. I am down to about 5 cars left that I will be selling soon that are almost done and after that I am only doing restorations on cars I want to keep for myself. Anything else is futile.