You can add additional copies of the game for £45 per copy. (This price includes shipping anywhere in the world.) Just add £45 per copy to your pledge. If you have already pledged but want to add additional copies, just click the MANAGE PLEDGE button when you've logged in to Kickstarter, then increase your pledge amount by multiples of £45 for each additional copy of the game without changing your reward level. The price includes worldwide shipping.