Kona EVs way cheaper in Quebec?

Hi all, I'm looking to buy a 2019-20 Hyundai Kona Electric EV. I noticed that when they have about 150 000-180 000km, they tend to be about $19-21k outside of Quebec, and about $14-16k in Quebec. I can't see any meaningful difference with these cars. Even cars in neighbouring provinces are at that higher price, meaning climate is unlikely a large factor. Does anyone know what is going on? I'm wondering if I should hop on a plane to save $5k or if I will regret it horribly.