I'm opening myself up to criticisms, but here goes.
I've been in this biz for a while and have stayed on the high dollar end of the spectrum.
Not pre-recession porn star pricing, but certainly in a top tier.  My clients are successful guys with disposable income and a need to find release and rejuvenation to keep their busy, stress-filled lives balanced.  As I've moved into the sensual domination aspect my clientele has gotten even wealthier, with more of a need
Whenever I've tried to offer specials, or advertise on Backpage, I always end up dealing with guys who are trying to stretch their budgets and the booking process becomes much more difficult because here is not the level of professionalism, respect and communication I am accustomed  to, and demand.  So it's more than $$ which separates the tiers of clientele- there is etiquette, manners, dependability and grace.  I AM generalizing, but this is my experience.
Cla