If you are going to sell eBooks, then Amazon is the best choice because
they are the biggest online eBook retailer and generate around three
quarters of all eBook sales via their website. They will give you a return of
70% royalty on each book sold. The only problem is they do not disclose
the email address of the purchaser so you cannot add them to your mailing
list for updates and future sales .

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Having your own website, and selling your own and other people's books
and products can be very lucrative. You gain the attention of your
customers and the ability to add them to your mailing list so that you can
invite them to come back to your site so that you can offer them some
more of your products or services. This is part of building up the all-
important traffic, especially this type of traffic as these people havealready come to you so they are much more likely to become repeat or
regular customers; this is what's known as quality traffic