NOT a very good sign for the value of mopar muscle cars

I once saw a 1970 Plum Crazy 340 dart that looks exactly how I want my car tro be when finished, black bumble bee stripe, black vinyl top etc. It was advertised as for sale $40 grand. This was almost 20 years ago. i don't think these cars will go for that now but people still ask that price. i would think original unmolested car would maybe pull that kind of money in, as in low mileage survivor. I am not sure id pay it though. I look at 65-66 mustangs every once in a while, the prices on those can be trough the roof,and there are still alot of them around.