Much to my continual frustration, the United States Postal Service does not have reliable or stable international rates. It is quite possible for USPS to raise its international rates between project launch and shipping time such that the kickstarter goes from a success to a debt-riddled failure. So what we cannot do is post rates for international shipping now that we can reasonably expect to be accurate months down the line when it is time to ship out books.
However! We are more than happy to take international orders with the understanding that international shipping will need to be assessed at ship date and will involve an additional transaction. I would like to say that that shipping charge will not be more than five or ten dollars, but I really, profoundly do not know, and I do not want to make promises that I have no control over.
I can say with moderate certainty that shipping to Canada will not incur an additional shipping charge.
So international backers: back at whatever level you'd like to. We will figure out shipping when it comes time to ship. I wish there was a better solution, but USPS does not make that possible.