I consider $350 a fair price since you are buying from an authorized dealer.
But if you are willing to forgo that, you won't approach anything close to $200 USD unless you buy from a US seller.
Dealing with customs is no big deal at all, I've bought literally dozens of big ticket items. As long as you avoid ground transport like UPS Ground, Fedex Ground, you only have to pay GST and PST if applicable when the package shows up at your door (+ maybe a customs handling fee of $5).
So take your pick, save a bit of money but have a little hassle or buy from your dealer and no worries about couriers.
Either that, or find a used pair from a seller in Canada (not parting with mine, ever)
Since the Denon is a little fragile, maybe the peace of mind of a real warranty would be worth the extra money.