I just got informed that the kindle version has been spotted on
Kindle allows you to sample part of the contents for free.
You don’t need a kindle device to read the kindle version. If can download free readers for Mac (10.5/intel), iPhone, Blackberry, iPad, Android, and Windows PC. If you’re on linux, you can use Wine to run the PC version. It also won’t work on a powerpc (older models, like mine) based Mac.