There's plenty of choice of such cameras on the market and many are inexpensive and easy to use. George Q Someone asked me if I was interested in taking a couple of pictures for use in a newsletter and trade show. They asked what they would have to pay me. I am not a professional, but I would like to make some money on this. A The pricing of photography is always a difficult subject.
Professional fees cover a vast range according to experience and ability.
Many photographers charge an hourly or day rate plus expenses. I'd suggest you try charging by the hour as a way of starting your photography business. Tell the client your proposed hourly rate and how many hours you estimate it will take to do the job. That's up to you. If not, ask for more per hour.