What do you mean (ie before the session, during or after)?
How often to you visit escorts? Once or twice a week/month/occasionally? Do you go after high-priced escorts (high-cost/low traffic), mid-tier level or low-level ones?
As for what I mean when I say nerve-wracking, mainly the question in the back of your head "Will the escort turn out to be a cop?" As you get more experienced with escorts, you learn certain techniques to screen out stings.
You'll also probably have the question in the back of your head "Does the escort have diseases?"
Also, having sex with a woman who's only with you for money is a different experience than having sex with a woman who genuinely wants to be with you. As someone who has had both, I can speak from experience. It's hard to explain if you haven't done both.
Then after the session, you might ask yourself "Did I really just spend that much money on sex?" (As you'll be in shock because this is the first time you've paid for sex).
Once you've had sex with escorts enough times, everything I mentioned becomes less of a concern.
The frequency of how often I see escorts varies. I could go months without seeing an escort. Then there could be a month where I see an escort twice.
When I was 25, I even hired 2 escorts in one night. Another time when I was 25, I hired one escort one night then another escort the following night.
As I've gotten older, I've capped myself at twice a month.
To answer your question of whether I see high-tier, mid-tier, or low-tier, I would say mid-tier.
The absolute cheapest I've ever been with was $120. I've never been the type of guy to see $60 street-walkers.
The most expensive I've ever been with cost 2 thousand. That was for an all-nighter, however. When I think of high-tier escorts, I think of the escorts that charge a four digit price tag per hour.
I would estimate the average of all the escorts I've seen is probably $300.