I typically don't go into a session with more cash than is needed.
Originally Posted by KenMonk
I always bring in the required donation and nothing more. Why? I own my own business and I've never had anyone volunteer to pay more than the invoice amount. That's how the real world works- you pay the stated price.
But if my business provides a good service, my customers recommend me to others. I do the same for the ladies, their tip is that I recommend them to my friends and via reviews. Reviews take longer to do than the typical session.