I always felt that Polly was more in to the private escorting/hooking scene...I think she sells her sex services (for quite substantial amounts), quite regularly to rich guys.
I always had this feeling though that her porn scenes were more routine, as opposed to pushing her boundaries to create the best porn and best porn scenes possible...there is nothing wrong with that. But it was a perception that I had, and explains that her sales were maybe okay....but not as great or as high as they could be.