The cost of international shipping is based on estimates we received from the USPS based on our packaging weight and dimensions. The cost of shipping varies with each country, but we decided on a single price ($60) for all our international backers in an effort to simplify the shipping and pledging process. This amount covers the higher end of the spectrum so that we can cover all the potential costs of shipping internationally.
We know it's not a perfect solution, but this is the best, most cost-effective method we have at the moment. If we find something that works better than this one, we'll be sure to let you know.