Most american sites mean free shipping domestically........international doesn't apply. Some will ship to canada free but only if stated. You'll also get hit with taxes on the item. Brokerage too if you send it by courier. In the end it's not really cheaper than buying in canada usually.
Etek 3LT grey/black f/s
Valken Proton greyish/black f/s
68 4500 PE stubby, LP output f/s
68 4500 AIR tank(no reg) f/s
Creed/demon eyes f/s