Mike,
As you know, a good paint job is all prep and that is where the hours and costs add up for a quality paint job. I hate it when I hear of someone jumping on a cheap price for the motor home and then raving about how good it looks. They ALL look good right after they are done. The proof is how they will look 2,5 or 10 years down the road, or long after your check has cleared.
If more people did the prep and then either sprayed it themselves, or paid someone else to do the spray work, they could end up with a great paint job and still end up shelling out less money than a South of the border quicky.
Congrats on tackling the jobs yourself. The quality shows and it leaves more money in your pocket for toys. ;)