and don't go see ones with none or bad reviews unless you can verify her somehow (referral).  i would also make sure to discuss what you expect once you get there.  be sure and do us all a favor and post reviews of the gals who are operating this way.

You will get the following:

About 90% of the time you will be rushed and cut short and out the door in 30 min or less.  Maybe 5% of the time, I hot provider may consider seeing you for 150 bones.  They will give you a great session but in 30 min or less, guaranteed.  You will then feel cheated if you were expecting full service, GFE, and an hour.  The other 5 percent or maybe higher will lie to you on the phone just to get your money.  They are higher volume girls who answer calls during sessions and have the guys lined up like the flight pattern at LAX trying to scam each and every one of them.  They follow the FIFO methodology  

Read reviews, ask around, and be prepared to shell out more money if you want an hour GFE.