Thank you Uncle Dan for this info.
The question becomes one of common sense. The girls who don't want a license that cost almost exactly $1 per day to make the income they currently are earning because of potential stigma will move on, and I would guess earn a significantly smaller yearly take. I would think you would be more likely to bump into an acquaintance in the spa or be seen going in or out the door than someone finding your name related to the license anywhere in person or online. For the spa's the cost is again, similar to utilities and if your business can't afford $500 increase in expense per month then your business probably isn't doing so great regardless.
Smart ladies who have already decided to do this sort of work because of the inordinate earning power compared to any other options they might have will bite the bullet. If a lot of girls leave, the ones who stay will be cashing in. This industry generates too much money to be shut down for such a pittance as the fees
@krayjee has provided us here. Smart owners who stay the course will see their incomes increase, and those who bail will be unlikely to find as lucrative a business opportunity in any other field.
One thing is certain, demand for the services provided by the spa industry isn't going to go away. Smart owners will do well, and ladies looking to get into ownership may have a golden opportunity here. People, Potter isn't selling, he's BUYING! I would guess that the ladies who balk at first may end up making the same decision about this sort of work that initially led them to spa world, the money is good, and better by a not insignificant factor compared to what they will earn elsewhere.