Ebooks are the trending reality of the times, with people not having much time to go through hard bound books. With the advances in technology, it is not only a reader who is at an advantage to carry a "portable" book in his hands, but the authors and publishers too have many collateral advantages.
Ebooks are your best answer to beat monotony as well as sticking to time-honored tradition of conveying your thoughts through words.
So what's the next step that most authors take? They sell it out easy on some online website or blog about the write ups, attend a few release events. In today's world, practically all kinds of data is available in a digital format, easy to access, free to download and promote as much.
Surely e-commerce is the shining light of the day but embracing such passivity by relying only on technology is bad i.e one need to be the prime mover in their business.