Deposits are for suckers. The vast majority of providers don't ask for one. They're not necessary. Slight financial risk is the cost of doing business and quite frankly the cost that clients risk as well. Most of us have coughed up the fees and still ended up with a dud at one time or another. We all risk some funds at some time.
Here's the real risk for clients. What is the method of sending a deposit prior to meeting face-to-face? Surely it's electronic and definitely traceable if not clear evidence. The hobby's legal standing should steer anyone clear of non-cash payments simply to avoid evidence. Safety and anonymity mean a lot to clients, ladies. Please keep that in mind.