The short answer to how much is new paint worth in my case is:
More than any of the vehicles I own!..
I gave up trying to have anything with a showroom finish...too often it gets damaged soon after spending thousands to perfect it,and you cant park it anywhere without worrying about it ever again,you obcess over it constantly..
I ended up painting a few of my vehicles myself,but the results were pleasing mostly to me only,I am not that great at bondo work,and HATE sanding,so it showed in my results..but mostly I just wanted them to be all one color and not a spotted primer leapord,and to protect them from rusting any worse..(the only vehicle I have owned that looks good and has factory paint is my Contour,its remarkable how well the paint has held up on it being 18 years old..
I painted my 81 van Ford Blue with paint from a Family & Farm center that was only 25 bucks a gallon,probably a lot like Rustoleum or a straight enamel from an auto paint store...it came out OK,it was a ballbuster to prep though,it felt as big as a house when it came time to sand it,and I decided a electric orbital sander was good enough for the roof and most of the flat surfaces,I could not run a DA air sander here for several reasons..I got some "curtains" in the paint and decided to just leave them.I wet sanded out later and did a touch up after 6 months..
The paint held up well,but is now flattening out and chalky from sitting...it'll still buff out though..too bad the steet metal is holy again in places now...
I just cant see putting a show winning paint job on a 4x4 I will haul wood with and plow,I'd be afraid i'd scratch it,and to use the truck "as" a truck..
To each his own though...me,I'd rather spend the 3 grand under the hood and between the frame rails..