As a photographer I frequently experience the no-show client as well. I have my own studio so I'm not quite in the same boat. However, I often book a client wanting a makeup artist who charges $100. If the client doesn't show up, I feel obligated to pay the makeup artist for his wasted time. I just consider it a hazard of doing business. If I tried to "punish" the client by charging more the next time she would go elsewhere for her photos. I try to be as polite and understanding as I can an hope she reschedules. My fear is that she may feel so bad or embarrased to reschedule that I miss out on getting that new friend and client.
Don't know if this helps.
John
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