The author of this book wants readers to pay what they feel the book was worth to them.
http://www.reinventingorganizations.com/pay-what-feels-right...
So you if you end up downloading and reading the direct PDF link (the security through obscurity method is clearly failing here) I recommend paying what feels right to the author:
You can watch a pretty good summary of the book here: https://www.youtube.com/watch?v=gcS04BI2sbk