Please do not add shipping costs into your pledge. Kickstarter takes a percentage of the money pledged and if you add your shipping amount into your total now you will likely have to pay additional shipping costs to make up the difference.
A little over a month after this Kickstarter ends you will receive an email with an invitation to the pledge manager. This is where you will be able to pay shipping and increase your pledge if you so desire.
The design for the plastic insert has not yet been finalized because we are waiting to see how many additional stretch goals we unlock but we are taking sleeved cards into consideration for the layout.
Don't see the answer to your question? Ask the project creator directly.