Can I cancel an annual subscription mid-year and get a refund?

Yes, you can, but only if you have stopped your studies and therefore no longer need the booklets. As for the amount to be returned: we will then calculate with the full price of the number of booklets you have had. So suppose you have already received 5 of the 10 courses, we will assume that you bought them at the full price (and not at the lower subscription price).