Please read my reply to him.
Now to you:
How to stay away from LE and/or rip off by a provider is to research here. Get the VIP if you don't have it. Only see providers with several reviews 6, 8, 10 or more. Make sure the guys that reviewed her have lots of reviews. This is a good clue she is legit and not LE. Read the details of her reviews to see what she did with those guys. Read her profile to see what she offers, kissing, etc. Look at her web site and read what it says. Look at her ads if she has any. There is no certainty she will do with you what she did with them but if you are clean, polite, follow her wishes in regard to screening, etiquette, and respect her boundaries you shouldn't have any problem getting what you want as long as she offers it.
If no rate is posted here on her profile, on her web site, or her ad you can ask how much for an hour of her time?
I wouldn't see a provider that doesn't have a rate posted since you're a newbie.
Sometimes providers will be OK with you asking more specific questions once you have been screened and the date is set. But being a newbie I wouldn't chance it. Talk to her at the appointment but don't start with a bunch of questions. That may cause her to hesitate wondering if you're LE and trying to trap her.
Go with the flow and speak up as things are happening. She'll be used to dealing with newbies probably and when she knows you are one it'll be fine.
Read the Self-Help Center. It's on the upper right of this boards ( and the others) under the red and white life preserver. It can also be found on the My TER page (tab at the top) look at the quick links on the left. It's at the bottom of the quick links list.
Read on this board. Your questions have been answered many times. Use the search feature. Change the number of days setting to several hundred.