paint question

Ok so my 67 cuda is ready for paint and my skills with a paint gun are less than stellar has been 5 years since last painted.
I took car to 3 shops for quotes to spray from bare metal body straight so they are not doing body work quotes range from min 5k to 8500.
The paint is urethane primer and paint 1 coat paint 2 clear coats.
I realize I live in a state where getting high is legal but what the hell are they smoking are these prices out of line just to shoot paint.

Are you expecting a warranty?