It seems as though Kickstarter should be using this. They currently charge up to 10% for successfully funded projects. Their rationale is they use Amazon Payments to process transactions. Amazon charges 3-5% on top of Kickstarter's cut of 5%. If Stripe charges 2.9% + $.30 that still leaves a couple points on the table for either Kickstarter profits or to lower the fee for creators. http://www.kickstarter.com/help/faq/kickstarter%20basics#Wha...