Hi Michael
Thanks for your message.
The short courses, credit bearing modules and qualifications on our main website do have fees. These vary depending upon the course and where you live. You can see more at the following page of our website:
https://www.open.ac.uk/courses/fees-and-funding/
If you want to study for interest there are lots of free short courses available on our OpenLearn website. You can study as many as you like and at you own pace. The website is below:
https://www.open.edu/openlearn/