You can buy it. Its available for Kindle on Amazon. Also available DRM-free on ebooks.com.

Still a bummer that O'Reilly stopped selling books directly. There's been so many recently published books that I'm interested in that I can no longer purchase.

I know, but is really pretty expensive if you live in a third world country e don't earn a wage in dollars.

Nice tip about ebooks.com. I also was an Ora non DRM orphan.