You can define if your course will be free or you are going to charge for the course in the course price field. If you choose to charge for the course, put the price in the text field. How much do you charge for your course is entirely up to you and you can change the price of the course anytime you want.
Students can and will review your courses so bear in mind the value for money because the better reviews you have the more courses you will sell.
Also, 5% of all proceeds in the Theatreis.Digital platforms goes to charity, click here to read all about that.