Your core game will be shipped to you two months after the end of this campaign, and the add ons will be shipped to you by September 2016(estimate). Important point: you are paying shipping only ONCE, so you will not get charged twice, even if we ship items to you in 2 sets.
Since January 2015, European regulations requires Kickstarter projects owners to declare the transactional values registered so European backers could be identified to pay VAT… So for Europe the shipping cost is really shipping plus VAT.
PetersenGames will handle all that activity for you (meaning that you won’t have to pay/declare anything when the goods are going to arrive at your doorstep).
It's really easy - after the campaign ends, we will send all backers a link to our pledge manager, controlled by Crowdox. Simply follow the link, and you will see all of the various add-ons and get to pick and choose from them as you please.
If you add the money to your pledge now, then when you select add-ons in the pledge manager, the amount will simply be deducted from your total. If you decide to choose additional add-ons beyond those you'd originally paid for, you will be able to increase your pledge at this time.