Unless I'm missing something, wouldn't it just cost the same if you bought from amazon us as you would amazon ca (or uk for that matter?).
I don't usually look on Amazon US. But just checking, I think it would be about the same as the .ca site with the exchange rate. I do tend to look on the Funi site, so something might be listed for $47.99, and be the same on Amazon ca. Even if the prices are similar, I doubt I would get free shipping from the US site, and it would take longer.