Down the street from my house is a 1957 Buick Super for sale. According to the sign it only has 87K miles on it and they are asking $5750. I have no idea how well it drives but body and interior did appear to be in good condition for a 51 year old car. Not a bad price for a vehicle that runs let alone one this old.
I would totally buy a car like this if I had the money and place to put it and didn’t already have a project car (that I haven’t worked on in years).