This USD$20 is the upcharge for shipping each rocker to Canada.  Add the rocker you wish to purchase plus this upcharge item to your cart and you will be charged this extra USD$20 per rocker purchased.  You will not need to do anything further.  By doing this your purchase will be shipped out without delay.  We ship in individual boxes, so you need to add one of these shipping upcharges for each rocker you want shipped to Canada.