I spent an hour or so trying to decide how I would tackle the reading of this epic Chinese story, labelled perhaps the greatest of all novels of these people. There are many options - it is on the web, and there are two other copies available in both print and Kindle versions. I admit that I've not yet read the entirety of the book, but I do trust the reviews of the content of Three Kingdoms, and the small amount that I have read is enough evidence for me that they were correct. This is a must read for any lover of Chinese or even Asian culture in general, and for those looking to digest some of the greatest historical literature of our species.
As per this specific copy "Romance of the Three Kingdoms (with footnotes and maps)," I am also very pleased. Although it is the same exact text that can be found on [...] it also comes with a handful of notes and some historical context at the end of the book. The maps aren't of very good quality, and the commentary itself isn't especially terrific, but they are valuable additions to this text. The formatting, in my opinion, is excellent. Those who are savvy enough could likely figure out a way to convert the online text into something readable on the Kindle, but to me, it's more than worth the five dollars that is being asked for here to have it done for you, and to have the knowledge that it's been done very well.
I would have been willing to pay more if they had put links to the maps in the text appropriately, and provided more high quality maps at the end of the book, in order to have a greater appreciation of where these battles are taking place. As it is, however, this copy is definitely worth the money, and I'm sure you'll be pleased if you chose this copy as I did.