Hey,
I don't know if it's te right place to post this but I found this on Amazon :
PGY G-HD ND4 ND8 ND16 ND32 Filters Lens Set for DJI MAVIC Pro Drone Quadcopter: Amazon.ca: Camera & Photo
Deal ends in 4h30, so don't loose time ;)
For Canadians btw, I'm not sure if they did the same for the...