which price to pay when a lady has different prices in different places?

If seeing an add in TER would pay the rate in the add or if not in add the website. If TER profile was different woul pay the add or website as not all,profiles are up to date
If looking up and for booking through P-411 would use that one.
If in contact given a rate would use that.
Just recently set up date and asked which rate was correct as there were three and her told me which one to use and now corrected the others.
Often it seems that many do not know what is posted on their TER profile so it is the last one I would use

If I see a current ad, I would use that, but when I contact a lady through email after looking at a website and her profiles on here and other sites I never know which to use and hate asking about which one is correct.

She's more than likely going to change her own website before correcting other websites. I'd go with that one.

If not then I would use her website.  If she doesn't have that then I'd use what seemed to be the latest ad.  If it still wasn't clear then I'd have to ask.

I can't speak for escorts but in my experience, with massage women, the response to my initial contact email will state their rate for 30/60/90 minutes.  Several times the rate that was stated in the email is not the rate listed within their TER profile and I always assume the emailed rate is correct.  

or if I email her I will mention where I saw her ad  and go by that.

I have found P411 girls with better rates on BP.

I have found that to be true as well, they have all the pertinent info in their initial response email.

Bad information on rates here is one reason.
Rates shown are client stated and are either wrong or not updated.
Was one today that had profile showing X and the P-411 in the link another
The P  -411 was provider generated and correct when questioning.

Sorry but I probably always will be, first off TER is not super quick to make changes to your profile that you request....
Therefore  some may feel like me -and might just give up on that since guys give their own rates when writing reviews too.

I have put in problem reports when the profile is different from th ewebsite.  TER did not allow the change in rate except from the provider.

and someone will tell me if I'm wrong, that providers who have taken ownership of their profiles can edit the rates shown there.

I agree with you about TER, especially since the rates have been posted by hobbyists in their reviews and not by the providers themselves.

Lockstock,
You might be more well off financially than I am but in either case, paying the highest rate and tipping $50-100 is not what I would do.  

I tend to assume the TER info is outdated as it is the only one she cannot change on her own.

Especially when problem reports about such matters are met with that the provider wants this rate listed.

I have had numerous problem reports denied with a response along the lines of that is what the provider wants in her profile, even when it contradicts personal experience, the details in multiple reviews, and what is contained in her websites and ads.  This makes the information in TER profiles less accurate and therefore less useful.  I do not understand why TER does this.  I have no problem with providers being able to update their profiles with accurate info but when it isn't accurate, well that just makes TER less useful IMHO.

If ever in doubt take extra and ensure you are covered.  Personally, I go to every appointment with a donation in $20's plus an additional seven $2.00 bills and 4 to 5 rolls of quarters.  It has worked well for me so far.

I can see a few of those rolls of quarters coming in handy, not that I'd ever put that many quarters into a meter!

I like to "make it rain" so to speak if I'm having a good time on my date.  I've heard more than once the quarters hurt more than dollars when I fling them around the room.

I was thinking of using them if I ever were in a dangerous situation...similar to brass knuckles in a way.

But that's such a pain.  ATMs don't dispense $2 bills and rolls of quarters.

If you pay her with 30 rolls of quarters, make sure you are willing to give the lady the carrying case, she probably won't bring her own!