It's $12 to ship anywhere outside of the US.
When you click "Back This Project" and pick your reward, you'll be asked whether it will ship in the US to to another country. In the pop-up list, choose your country. (They're all $12.)
You won't need to fill out any address information until after the campaign is over in late November.
You won't need to fill out any address information until after the Kickstarter campaign is over. In late November, you'll get a survey asking where we should ship your pack(s).
All Writer Emergency Packs have the exact same cards in them. All packs are identical.
Don't see the answer to your question? Ask the project creator directly.