Tipping may mean different things with different agencies. I don't use an agency unless they have a platinum reputation and the rate is flat and all-inclusive.

Some agencies charge an introduction fee if you will and then anything that happens during your hour must be negotiated with the girl and covered by a "tip." Of course, if you're using an agency that follows such a procedure, there will be no hour because you're about to get ripped-off. She'll be out the door, mere moments after she's collected all the cash she thinks she can get out of you.

Independent girls never ask for more money than the stated fee and don't require tipping. (unless they are ripping you off) The best girls never expect a tip, but it's probably the best way to make them cum. The girls who expect or demand tips, aren't worth seeing, and certainly aren't worth tipping.

I tip a $50, typically, but anything between $20 and $100 is common. The experience she offers is unique and personal. If you enjoyed the time she spent with you, absolutely you should show your appreciation. She didn't sell you a car. It's a service. You tip for good service.