You're way out of my league JJ. I charge only $50 US no matter how long I spend on the car. I also don't do anything to the car I don't want to do.

You won't catch me shampooing carpets or cleaning cloth seats. Customers understand that
I decide what should be done with the time alotted. Generally, I just do a basic vacuum/wipedown/windows on the interiors and go all-out on the exteriors because I like the exterior work.
My customers tend to be lower-middle class like myself. They have little disposable income, and 8 year old neglected/abused cars. They would never pay for a REAL detail. They just let me play with their cars. It's amazing what a couple of days with a PC and aggressive pads/polishes can do with these cars. By the time I've done the tires/wheels, trim, and polished the glass, the transformation is truly dramatic.
Hehe.....there are now about 15 old beaters running around this fairly poor neighborhood with AIO/SG/Souveran on them...and they look stunning. These cars are eye-catchers inspite of the numerous dings and deep scratches on them. I just love the black beaters.
I do my immediately adjacent neighbors' cars for free; but they get the one day job with Glanz wax. This keeps them from calling the cops when I run my PC at midnight.
Mikeman out.