Oh thanks! That was my first post on the forum too
For our business, I've found amazon buyers to be a little different than our typical customers- we're still trying to figure them out
For example, most of our products are cheaper on our regular site (to offset amazon fees), yet people still buy certain products almost exclusively on amazon. We don't get much traffic from amazon--> our site (Amazon's design I think intentionally makes this difficult). When comparing kickstarter vs. amazon, there probably would be more "newbies" coming to your product via Amazon (people who have never heard of rocket mass heaters etc.), while many supporters of kickstarter may have been coming from permies.com (and thus already dedicated to the idea of rocket mass heater and willing to buy the entire set at once). Who knows, we've mostly been experimenting and trying different products by trial/error. Since listings are free on amazon, you could always try posting the individual dvds and see what happens. (What we usually do, is fulfill orders ourselves at first. Then, if a product is really successful we'll switch over to FBA).
I've used <p> and <br /> tags before, I would assume that you could create a link as well (although I'm pretty sure this is against Amazon's terms and conditions). I don't have a link to a resource page- I just figured this out on my own since I wanted my information to be listed instead of in paragraph-form.
On sending the DVDs to other countries- it might be good to see which regions are the same as ours. Otherwise the DVDs might not work! That would be sad! I don't know much about setting up websites for digital purchases, but I'm sure there must be some info on it out there. I see Ernie and Erica's website is through google sites- they may even have a way to do digital products.