If the student comes to me, my fee is 150 CHF per hour, so 300 CHF for a 2-hour lesson.
If I tutor by Skype, my fee is 150 CHF per hour, so 300 CHF for a 2-hour lesson.
If I go to the student, I charge 200 CHF per hour, so 400 CHF for a 2-hour lesson.
