"amazon fps marketplace quick start" is a web service from amazon to integrate their payments into a website.
a) I want to offer 3rd parties the ability to load products/projects onto my online shop. I take a fee.
b) I want to offer customers delayed authorisation/funds capture on all products/projects on my site
"amazon fps marketplace quick start" is designed for this. See the image below to see how Kickstarter use it.
(Eventually, I am setting up a competitor to kickstarter in the UK called thereallybigsociety)
I currently use mybigcommerce as the online shop. I could use amazon webstore if that is quickest/easiest.
I'd like to get one product done in next couple of days and then bolt on the full Kickstarter competing offer in the following weeks. I have an amazon payments business account set-up already. (And paypal & ebay)