Nick, if your car is already primed and ready for paint (two stage) I can't see why it would cost more than $5,000. I have a primed car ready for paint and it's going to cost me $3,500 for near show quality paint.
These paint shops hire illegal aliens to do the labor intensive, time consuming grunt work and pay them below minimum wage, then tell you the labor rate is $50/hr or more and that's why it's so expensive.
Find the supplier the paint shops use and ask them
for a reference.