Even if you were to do all the work yourself, (hundreds of hours) you would probably be looking at $2000.00
in material, primer, catalyst, sand paper, masking paper and last, but not least paint. A solid color could be single stage.
A metallic color, a base coat, clear coat and even more expense. $10,000 for a good quality paint job is not unreasonable.
Many high quality shops would probably be more. What do you think you would go out the door for at Grave Yard Cars?