We chose the US only option because the other option was to open it up anywhere and set a specific cost for shipping to any country. We weren't sure we'd have any international backers so that sounded pretty complicated to us.
We will, however, ship the following reward levels to Canada: $5, $30, and $100 and are opening to figuring out shipping options with you if you are from another country! We're super excited that we got an out of country inquiry!!