I vaguely remember seeing a paint job listed for a medium size car for either $99 or $199. The biggest part of a paint job is the prep and masking off of the glass, the painting is the quick part. The old paint would need to be prepped/sanded to create a "tooth" for the new paint to stick to. Then everything masked off not needing paint. It would probably depend on how good of a paint job you would want.
When I painted an old ranch work truck I had, myself, I rough sanded the paint, masked off the glass, and "spit" on the paint with a twelve dollar paint gun and a 1912 model air compressor. Total cost was about $50 for everything. Looked decent from far off, but up close, the paint dried with bubbles and bumps in it, like velcro. If you tried to do a "Bo Duke" hood slide over it, you either stuck in place or your pants ripped. Was interesting. I sure wish I had that old truck back...........