Totally depends on the color and condition of the car. $4-7K. But Dreamsmakers Kustoms if the furthest thing from Earl Scheib you can imagine. They pick their customers and turn people away everyday. For marbleizing He requires a car to be blemish free and sanded down hard. Marbleizing~Jeweling a car requires 4 actual "paint jobs" A fresh candy basecoat that the marbleizng gel can "work" on, then the marbleizing gel, then the translucent candy that "Dyes" the silver or gold gel, then the clear topcoats that "seal" it all together. Topcoats may have pearlflake or ice metalflake in them. Each coat has to cure, and then be wet sanded before the next goes on. Then the final coat is wet sanded and then through 3 rubbing compounds.
Here'* a link to a lot of their work. I'll be happy to kook ya up.