The part that I like best about ecommerce is that it levels the ground between the haves and the have-nots. People who don't have much capital but have expertise in a certain subject can easily create informational materials such as e-books that they can sell online. They can set up their own ecommerce store that focuses solely on these digital files or they may also advertise their product on various public auction sites or merchant malls such as eBay.
I must agree with Scott Lindsay that this is a low-key way of making money online, knowing how little capital is being invested (financially). However many online merchants have made considerable profit off selling e-books, webinars, and other downloadable digital files. In fact, most people who don't have much time to go to brick and mortar bookstores need only browse an ecommerce store such as Amazon to shop for books and have them shipped.
Despite the boom of e-book selling, merchants should also be aware that download security is an issue among e-book sellers. Unless they put up or advertise in a secure ecommerce store where they can send the file to the buyer without being defrauded, hackers are likely to steal the files. One of the best ways to protect merchants from download fraud or identity theft is to send only the link to the file via email as soon as the buyer has paid for the product.