And I might come off as the a-hole, but, for every guy looking for a "Canadian Source", they gotta understand, that they better spread their cheeks and brace, when it comes to price, as there are not a lot of folks actually making this stuff in Canada, so they buy it from outside, pay the costs associated, and then mark the stuff up even further, usually.
Shop your US sources carefully, and you can minimize the burn, like using USPS, rather than a Courier Co., to bring it across the border. Not everyone down south will play, but some will. And if you MUST use a Courier Co., like Fedex or UPS, carefully consider the use of up-rated carrier coverage, that may include the cross border burn without an outrageous extra fee! A lot of the 'Air Express' and similar options, while looking expensive, will save you from a third party billing you well after the fact, for their "services" (like the bull, 'services' the cows!).