All my cables consist of Monoprice and Blue Jeans cable. Never had to pay any extra charges. I believe both companies shipped USPS and then dealt by Canada post. However I have not purchased anything from them in the last year or so.
Monoprice prices are so cheap it wouldn't matter anyways. I do like the BJC better though because of the better build quality and connectors. However, I do refuse to pay the premium for the BJC analog cables.
http://www.monoprice.com/home/index.asphttp://www.bluejeanscable.com/