Don't bother, it's not worth it.
I was in vegas a few weeks ago, and the average prices were something like this..
$100-200 just to get the girl to show up at your room, then you need to pay extra for anything else.
If you win some $ in the casino, or you don't mind spending $500 for 1 shot on goal, go for it.
I saved the $ I was going to spend on an escort, and went to Ghostbar & Tryst, and I brought a girl back both nights
Make sure you check out the shooting range
http://www.thegunstorelasvegas.com/
Don't waste your time or $ going to the rippers down there, we paid $30 cover to get into one ( club paradise I think ) the girls were mediocre, they are incredibly annoying & pushy trying to get you to go into the back room ( where nothing happens unless you want to spend $1000ish )
And the girls on stage don't take their bottoms off, just tops.