Seeing as the packed weight will surely not exceed 20 pounds nor exceed the USPS dimensional limits, THE best means is USPS's Priority Mail International flat rate service.
It's cheap, and goes into the Canada Post system.
It will come in duty free.
Any C P brokerage charges are small, and you don't need a broker.
True, Phobman would need to fill out some paperwork, but it's pretty minor stuff and once the first one is done, all the rest will be cookie cutter class.