by Sunish Chabba
Shipping on this project isn't even as expensive as most others I've backed, excluding the ones where you did free worldwide shipping. JSYK
My understanding is that Kickstarter will not allow you to change any of the existing pledge levels, not even to fix the shipping. However, they will allow you to create new pledge levels that included the corrected shipping. Then you just need to tell the affected backers to switch their pledges to the new offerings.
That's not a problem for those of us who want the book as well, we just have to add on a bit less.