Sorry if you feel this is complicated, however you fail to answer the questions posed to you by people here. Look, are you a professional or just some guy with a camera? From the question you pose, you really have no idea how to charge a client. That leads me to believe that you’re not very experienced. So you shouldn’t be charging professional rates.
Look, how much does a hair cut cost? It depends on where you’re getting your haircut, is it a barber shop or a hair boutique? What’s the level of experience of the person giving you a hair cut. Did they just start out or do they have many years of experience? My camera people have about 10-20 years of professional experience, and shoot beautiful footage with high level Broadcast quality HD cameras. Should your rate be the same as theirs?