Folks have been asking how pay for the Add-Ons in this Kickstarter. Luckily, it's pretty easy.
If you want a reference, go to this page on how to pledge: https://www.kickstarter.com/help/faq/backer+questions?ref=faq_nav#BackAProj
New pledgers: Go to How do I Pledge? section on the linked-to page for a quick rundown of how you pledge. There's a video: Around 00:16 you'll hear the narrator begin to tell you that the dollar amount you pledge and the Award that you can select can be different amounts. (The example they use is Pledging $10.00 for a $5.00 Award) Pick a Pledge level and it is here that you add on the Add-On price. Then after you pledge, send us a message telling us which Add-On you want, and we'll keep track of it.
What if you've already pledged? That's even easier (see 01:00 of video). All you have to do is go to the Kickstarter project page and use the Manage Your Pledge button. After you increase your pledge to the proper amount, send us a message telling us which Add-On you want, and we'll keep track of it.
Please go through Kickstarter with your messages, so there will be a record of your request everyone can refer to. At the end, we'll be sending you a confirming e-mail and Survey.