I've reviewed a few of them.

when taking an agency bookers recommendation.  He'll say he has a new girl, no reviews, just started today, and like you, I say, "Why not?"  Like you say, she turns out to be superior to the competition.  Then within a six months she becomes a local legend and I have to get in line to get an appointment to see her.  It doesn't happen that often, maybe 3 or 4 times a year, but I love it when it does.  

Back in the BP days. A fake pic, no reviews, but she had an email as well as a phone number so I reached out with some questions. The email exchange led to a few brief phone calls and I felt like she was legit and made a date.

I arrived at a nice little apartment. She was cute. Really cute. We chatted a bit to break the ice. her little dog was friendly too. BCD she really got my engine revving. Super sexy body and she knew how to touch me. We actually kept things pretty simple, but it was otherwise a "way beyond expectations" first encounter.  

I immediately asked if she was free same time next week. I NEVER  do this. Never repeat so soon, but there was something about her. Things got better each week...then one day I showed up to find moving boxes stacked in her living room. She decided to move back home and give up the SW life. I had 10 great weeks.

An agency girl. Brand new just starting that week. One of the greatest fucks of my “career”. Cheap. I was planning on seeing her every week but when I called her handler to make my next appointment he said a client talked her into quitting the business. WTF! I still have the photos though…. Sigh….

This happened to me also.  I met a girl that just started with an agency.  Within a few weeks one of her clients told her that she was worth double the rate and put her in touch with a booking assistant that assists several ladies in LV and her rate went from $350/hr to $700/hr.

I found a Unicorn that turned into a normal escort

I was trying to book a new girl with a Toronto agency, and she only had a 30min window of availability. I roll in, she’s first few days on the job.  Turns out she’s a dance student, so she has amazing flexibility, stamina, doesn’t give up.  I ask for Greek with a CIMSW finish, she does that, and then pulls round two out of me in 30 min!  All with a smile and fun attitude! Even with tip I think the damage was less than $200 USD.  I saw a her a couple of years later, she was still pleasant, and still was down for Greek even though it was more difficult for her then, so we quit that activity early, and she didn’t do CIMSW anymore, and she only did 60min appointments.  She went from unicorn to regular, the business does that.

I met another girl that was literally her first night with the agency, and she started out great, but turned into a unicorn during the appointment. She was beautiful (could be a famous actress’s doppelgänger) and she was doing Greek as advertised; during the session I was getting a little tired, she went for the ATM without a second thought, it was her idea! Tried to book her the next day, but she had flaked on the agency and was gone!