FOR BACKERS OUTSIDE OF NORTH AMERICA: You can still get your name printed on the acknowledgments page and then just buy yourself a copy of the book if you want from your favorite local online retailer once it's been published. (As of January 21, 2018, the United States Postal Service no longer allows books to be shipped as First-Class International Large Envelopes. They have to be shipped as parcels now which is prohibitively expensive.)
For a $12 pledge, you'll get a copy of the book at 99 cents off the retail price, and your name will be printed on the acknowledgments page. Free shipping within the United States. $10 shipping to Canada and Mexico.