The canuck exchange rate is .9962 so it has no bearing on that at all....BUT that is a $800 2X10 so yes $400 is not a bad price. But $800 is just stupid for a 2X10 who is running ampeg? I would be looking at other options for 2X10 cabs. I bet you can get something that sounds just as good brand new for that price.
That particular 210 is not very wonderful in my opinion. For $400 you can buy a a mint Eden or Mesa 210 used or even a new GK Neo 210 from Long & Mquade.
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Dwelling on the banks of the deep end.