I don't look - living in St. Catharines and going over the border every summer for DMB shows, I've come to have a number of friends, particularly in Buffalo, so I buy all my electronics over there.
Given the exchange rate, it's hard to pass up. Of my 125 Blu-ray's I think I've bought maybe 5 of them in Canada. My DVD-Audio and SACD collection has seen similar ratio's.