Get a copy of Kestrel's Talon on sale from Dec 30, 2016 until Jan 4, 2017 (US & UK only). Sale starts at 99¢/£0.99 - buy early to get the best savings
Amazon US -> https://www.amazon.com/dp/B01FLG3C0M/
Amazon UK -> https://www.amazon.co.uk/dp/B01FLG3C0M/