Have you decided in which school you would like to attend the course?
If you tell me this, I could me more precise in my answer, because every school might have different rules and fees.
I will provide you an example for a school in Biarritz, called France Langue that you can find at the following link:
For this school, the administrative fee is 80 Euros and the price of tuition varies according to the type of course.
In the page, in the brochures of the school, you will find all the information about the content of the courses.
Did I help you or what you wanted to know was different?
Let me know and I will be glad to help you again!