I've never played anyone from Aegis Kai Doru, but I've always wanted to. Tying in werewolves with minotaurs is just my kind of story hook, and playing a member of an organization that hunts down artifacts for use in an organization rocks.
Having said that, I kind of wanted more options from this book. This provided more story hooks for GMs to use than anything else. There are a few Relics for players (or, again, for GMs to give to players) and a lot of material about the history of the organization and the way you join it...but not much else.
That said, you're paying less than a dollar for it. This is definitely worth the cost, especially if you can catch it when it's on sale.