Apocalypse Alive is currently available on many of the Internet sites such as some of the following:
Amazon.com
BarnesAndNoble.com
Bordersstores.com
HotBookSale.com
Eruditor.com (in the United Kingdom)
Eden.co.uk (in the United Kingdom)
Buecher.de (in Europe)

You can also enter Apocalypse Alive into your search engine.

If your bookstore does not stock Apocalypse Alive, you can have them order one or as many books as you wish.