Does Ashlyn Gere or Victoria Paris ever escort?
My recommendation, one thread above yours ( : MfSD>>>>
Victoria Paris was one of the first PSEs, long before the internet agencies. Alas, those days are gone and she no longer does. I can't say 100% for sure about Ashlyn, but I'm pretty sure that the answer is also "no".
Gee a day late and a dollar short for Victoria Paris. 
I spoke with Ashlyn Gere not to long ago and she does not escort. I thinkshe was debating about it, but decided against it. She is looking to do more mainstream work and will probably go back to school sometime in the near future.
In the early '80s I had a gig which supplied services to such entities as Cinderella Distribution (nee CDI) and other producers. Porn Stars and Starlets were available then, usually through madams. Average cost was $200 or so, some of the bigger names went for as much as $500.
These services have always been around, but the presence of the Internet and the wider acceptance of porn by the mainstream media has created greater interest and demand for services.