I get questions regarding the availability of the book, and I have no good answers for them.
I decided to write this book for iBooks because I wanted rely on its ability to put 3D object on the page next to the text that describes it. This decision means that the book is only available through the iBooks Store.
This support page details what type of content can you can buy in your country. Apps, podcasts, iTunes U, and free books are available everywhere. Paid books is available in 51 countries. The map showing the availability is shown below and a full list is relayed at the bottom of this post.