The Difference Between a Good Paint Job and a FAB! Paint Job

Last week, I caught the very end of a show on cable about the differences between, if I remember correctly, a $5,000 paint job, a $10,000 paint job, and a $15,000 paint job.

Let me beat all the wiseguys to the punch: Yes, I know the difference between these paint jobs is $5,000 per increment. Ha, ha, very funny.

So, what ARE the differences? How many times the car is sanded? HOW it is sanded? The type of paint used? FYI: I know NOTHING about painting a car.

Thanks, in advance, for the info.