The Ruins of Gorlan ($6.39 Kindle), by John Flanagan, is Book One of the Ranger's Apprentice series. The link and cover are for the US Kindle version of the book, but the one being given away has, in my opinion, a much nicer cover; it's the one the book has in Australia. This series is geared towards middle school to high school age kids, but isn't a bad read for adults who enjoy straight fantasy.
Book Description
description removed due to author's misunderstanding of affiliate use of content provided by Amazon
There are two small catches to the free book. First, you have to sign up for the Ranger's Apprentice newsletter; your download link will be sent to the email address used and be sure to pick "outside Australia" for your location. The second, though, impacts where you can read the book. It's a DRM'd ePub, which means it requires Adobe Digital Editions to both download and read (or you should be able to read it on a Sony Reader).
Click HERE to sign up for the free download. The offer ends September 30, so today is the last day.