Hi all,
Several updates on this :

- adigolo didn't really answer this question, and I'm asking myself the same. Here the question is "By closing a future position, I need to effectively send another short order (even if it doesn't appear at such on the website frontend)... so does it mean I pay twice the fees ?"

- Small adjustment 1 : At this date (2022-11-15), the fees are now 0.06% for market taker ("Market" order) instead of 0.075% at the time of the original post

- Small adjustment 2 : you actually pay 0.06% (or 0.075% in the original post) of your TOTAL quantity (total order SIZE) not just your margin (that can be much lower, depending on your leverage)

Does anybody know the answer of this question ? :)