If it’s a commuter car, work truck, weekend play toy, or just about anything that doesn’t need to look like a show car I’d look for a professional car or even cabinet finisher that will spray it as a side job. If the person is already renting a spray booth for another job, squeezing you in is extra profit and saves you money. I’ve never used a paint booth on work trucks, but waited for a time of the year that’s warm, but bugs haven’t come out yet. My little black Triumph convertible was also painted in the driveway, but detailing little imperfections out of the gloss black was more trouble than renting the spray booth and I wouldn’t do that again. Much of the cost is prep - if there’s no body work other than paint chips, carefully sanding damaged paint down to something solid and taping things off yourself is a time tested money saver if you’re detail oriented. A set of semi flexible sanding blocks and rolls of 320 adhesive backed paper can do the whole car well enough for primer.
All new cars are a color coat covered with a clear top coat. If you’re saving money and don’t mind learning how to wet sand and polish the final finish, I really like the Acrylic Urethane single stage paint that doesn’t need a clear coat, like the Summit Racing system. Summit has a good explanation of the steps and products for each step. Basically you spray an epoxy primer to seal off all the existing paint so it can’t bleed through, then a sandable primer to take care of minor scratches and paint transitions, and finally the color coats. What you see is what you get with single stage and a big advantage is the car can be driven right away and the final wet sanding and polishing can be done as you have time until it’s as flat and glossy as desired.
I’ve never had any paint peel, even from tool boxes and tools painted this way, but single stage paint does need to be waxed with cleaner wax once or twice a year to strip off any fading paint, and as the paint layer thins needs a few new color coats every 10 years or so.
It’s not for everyone, but for a little elbow grease and a cost that averages out less than $100 a year for materials and probably another $100 a year to have someone spray it for you, it’s hard to beat.
