In the 70's I had a pickup with a white bed and red cab. I had Maaco paint the whole thing. It was just an off road 4x4.
Knowing what paint materials cost, I don't see how they can do it for the price. Mine stayed on for years and looked good.
As others have said, they don't do much body work, but for the money, the paint spraying ain't bad.
Of course your not going to get a "show" job, but pretty decent.