What is a reasonable number for some body repair of rust and a quality paint job 66
 

In the market for a 66 Coupe Deville convertible. Finding many with rust repair and paint needed. What' a reasonable number to figure to repair rust properly with new sheet metal and a quality paint job?

I know it' hard without seeing but let' say a car that has a fair amount of rusted repair and a repaint??

any help appreciated!