Language tutoring: charge per hour?

i am a professional foreign language teacher, have been working fro some time as a teacher, still when i was required to teach someone my own language it was very difficult - things which are obvious for myself were not obvious for my students. so if this person is not even a teacher i do not think u will be progressing with your language studies. and i live in europe, so i do not think our figures will help u. but now it is 30 euros per hour the cheapest