The book went on sale today for the general public; you can purchase an e-book version for $ 10, or a print edition bundled with an e-book for $ 25. (boingboing.net)
Sadly I've just put mine up for sale today as I don't have anywhere near enough time to play it these days. (thesixthaxis.com)
There's a few sales today from several airlines, for paid and award flights. (travelpointsguide.com)