What's the point of the action?
Buy any number of courses for any amount and choose courses from the special list as a gift for exactly the same amount.
For example: you have spent 1000$ and now you can choose courses from the special list for another 1000$.
It turns out that you paid 1000$, and courses received for 2000$
You can choose from a list of 16 courses, you will definitely find an interesting one!