Our surveys and add-ons will be run by Backerkit. If you haven't used Backerkit to fill out your surveys, it's pretty straightforward. Within about a week of the end of the campaign, we will send the survey to you. This will come from Backerkit and not from Kickstarter (this is normal!).
In the survey you will provide your shipping address, choose options (like Era 1 vs Era 2), and choose any add-ons you want. To purchase those add-ons you have 2 options:
-overpledge via Kickstarter for the exact amount of those add-ons. Your overpledge amount will show up as a "credit" that you can use in Backerkit's add-on webstore.
-purchase the add-ons directly via Backerkit.