I have observed that spas in high traffic tourists areas and casino cities (Las Vegas) tend to have enough high roller clients until they do not want us meager $200 guys. I do not pay, frankly because I can not afford it.
I try lower priced, but safe, venues. I also try to build relationships. My best allies have been the Koreans. I bring them a nice carried-out meal from a good Korean restaurant and that has gotten me MUCH
mileage.
On first visit, I take just half-hour. Try to communicate in broken English. Show them a Korean menu. Ask them what they like. Next time I bring it, might cast $30 to feed whole house. Pay house fee, still tip $80 to $100 for
FS. Total tab might hit $220, which is less than $300 and I always have had a superb unrushed encounter.
The only drawback is there are monthly time lapses between my visits and personnel changes. If no one remembers me, I present food and use the name of a previous provider as a reference. It gets me a lot of good attention and service.