Shipping to Canada by mail is quite easy and only requires a simple declaration as to the contents, its value and where it was manufactured. It gets just a bit trickier using UPS or FedEx since they do add an appreciable brokerage fee and, apparently, when a squabble occurs with the consignee over payment of these amounts they can be charged back to the shipper. Making sure the buyer understands what these costs are and that the buyer is liable for them seems simple enough, but I keep hearing of situations where misunderstandings occur.