It's tough to say, though in my experience the providers that actually make a pricing distinction between GFE and PSE do so because they allow you to bring a camera to the PSE session.  In this case, GFE probably refers to the generally-accepted suite of 'girlfriend' services which include DATY, BBBJ and FK of some kind.

Depends upon the PSE or GFE that you engage. PSE means Porn Star Experience. Essentially a PSE does the type of things that one sees in porn movies. A real GFE is an everyday woman that is dynamite at sexually pleasing a man. I prefer hot, good looking GFEs because I can do without fake moaning.