UPDATE: GoPro Hero 8 25% off YMMV
update #2 Recieved my hero 8 black on Friday using the 25% discount from GoPro customer service. As expected no tax or duty (this is the 3 or 4th GoPro i have now ordered direct from them and I have never had additional costs)
Final cost in Canadian dollars after exchange on my MasterCard $419 hot hot hot!
GoPro is offering the trade up program again on the hero 8 black. I took advantage of this last year by using cross boarder pickup as my shipping address. This year It cost me $8 for small packet air to ship an old dash camera in for trade using Canada post, last year I sent in an old SJCam using the provided ups label although it was a huge hassles with ups due to no custom clearance docs and delayed the delivery by 2 weeks so this year it's well worth the $8 with Canada Post