We do apologize if you feel that you have been miss-led by the way the free shipping looks on ebay. But that is the format that is EBAY has layed out and we have no control over that. But if you do click on shipping details it goes further to explain that its is within the USA. But I will to see if there is a way to clarify it better.
One way around it for you guys in Canada is have your items shipped to a boarding state and drive across and pick it up. Many of our customers do that or they have a friend close to the boarder and they pick it up and ship it on the Canadian side to the purchaser.
Just a thought for getting around the shipping costs.