I think the ebook publishing thing on the internet works very well on mini-sites.
To learn about this, you need to learn from the pros who are experts in dealing with these kinda business, the ebook publishing and selling it off on the internet business.
For example, you can look for people like Marlon Sanders, Yanik Silver, Ewen Chia, Johan Mok, Jeff Johnson and many many more. These are all people who're making money on the internet by selling information products or "how to" ebooks.
Their best strategy is to find a hot market, write or get freelancers to write a book about it, add in audio and video with an expert on the certain topic, then sell it off via a 2-page website, the landing page would be a long sales letter with product description, testimonials and such, then, when you're ready to buy it, you just click on the buy button and pay, and download your ebook, simple, automated shipping, costing you almost zero maintenance on your part, except for hosting your website and such.
for an example of something like this, click
here
I just received an email announcing the product launch,
if you want to learn from these professionals, then I'd recommend Marlon Sanders, simply because he is a real pro, no BS products, like selling you something like a teaser instead of the full product hoping you'd buy more,
you can check out one of his best selling products
here
hope you all would comment more about your views on this publishing thing, it sounds very interesting I'd say, writers can benefit so much from this, wish I was a writer myself lol