Yes, this is always a big question. Previous paint and body work has ranged from $13k to $30k and is pretty much dependent on the amount of body work required. The $13k job did not require extensive body work, whereas the $30k had new floor pans and a number of other patch panels welded in. So I use this as a guideline. Based on the condition of the body, I can estimate what the cost will be within that range. Typically we are just paying for labor and materials versus a set price.
Also, my previous body guy would not give me an estimate until the car had been sandblasted. You never know what you will find under there.
Regarding paint quality, my San Diego guy was one of the best. If I am not mistaken, @jayhawk received an award at 2023 ZCON for Best Exterior at the show. I think his work on 'The Orange' was even better....like liquid glass. He really is an artist. All paint work was 2-stage paint, color sanded and polished.
That being said, the paint on this one will most likely be a little different (need to confirm with owner). As we are going for the as close to original as possible, this paint will be a single stage where I will just do a single final polish with minimal color sand as needed to replicate the original finish. I did this same finish on the orange Z that I previously owned. This finish should save us a couple thousand as there will not be a full color sand.
Also, I typically work as the overseer, coordinator and quality control for the paint shop. The customer pays the shop directly.
I do seem to notice a bit lower labor rate here in Boise which should help withcost.
All things considered, I honestly have no idea what the final cost will be. My best guess is $25k +/- $3k. I am hoping to come under that, but will know more after the sand blast.
Hope that helps.