Jngr:
While I am not a professional detailer, I have had some business world experience and I think one of the problems you had/will have at that shop is that they don't charge enough to allow a decent hourly rate for their employees.
The price list has an hourly rate of $39.95 per hour. If you are receiving 25% of that, it's less than $10 an hour. You sure can't make enough money to raise a family, own a home and car at $10 an hour.
Their price list doesn't seem to be too far off for a one man mobile operation, but it sure doesn't leave much room for overhead.
$130 to $150 for their complete(?) detail isn't too far off since it doesn't call for any oxidation removal, swirl removal or polishing. If you add another 1 to 1-1/2 hours for polishing at $40 an hour, the price is getting up to the $175 to $200 range.
Seems like their complete detail is pretty basic.
The next problem would be whether or not there is enough dollars to pay the employee better and still pay the overhead and give the owner a return on his investment. I don't personally think there is. :dunno
It kind of looks to me that they are better off just hiring the $10 an hour help for their details. If you can't make at least $20 an hour working for them, you are probably better off doing your part time thing. You will work lots less detailing hours, but given your experience and expertise, you can probably can do it at the $40 to $50 an hour rate.
Like you said, it was a good learning experience.
Charles