I also think it depends on several factors, particularly qualifications, experience and the level at which you are tutoring. I started at $25 per hour and have slowly raised my fee to $40 for primary and $45 for high school. I have high HSC results, an Honours degree and am an intern Clinical Psychologist currently undertaking postgraduate qualifications. I am also an experienced University teacher and marker and taught English overseas several years ago. I believe that the more qualifications and experience you accrue, the more your time is worth as a tutor. My students don't just pay for one hour of tutoring, I do an average of 1 hour of preparation for each student each week including personalised homework sheets for mathematics students. If you are really dedicated to your students and have several years of experience, it is important to avoid selling yourself short.