Back in '70s I painted a TR Spritfire and a 356 Porsche. I liked using acrylic lacquer paint because it dried quickly, and bugs/runs could be sanded/buffed out. Even back then materials were over $300. Seems it went thru a lot of costly thinner. Some colors like red were more - they claimed it had traces of gold in it. In late 70's I had a '72 VW bus painted red at MAACO. I did all the prep. It came out pretty good for an old bus and cost about $400.