Where to buy Porsche Design sunglasses in Toronto?

I am looking to buy the Porsche Design 8928A sunglasses, and was wondering if there are any stores that carry that model?
Or any legit online stores in Canada that sells them?

I don’t think there are any PD boutiques left in Toronto, and I looked at ordering through their online store, and shipping/delivery fees is 170 dollars, plus they ship via fedex, so will I get charged duty as well?