the git repositories are there to avoid to copy-paste from the PDF (which is an awful experience) the source code of Part 2. The bootstrap themes are nowhere to be found because I wrote them for the book and as an example for those starters the book is aimed at.
And for the first day the price is $59, which people seem to be happy with so far :)
Also, there's the book without the extras, if you think it could be useful to you... but I sense you are not a starter, now are you?
What the hell is that supposed to mean?
Rephrasing: "but from what I can read, I guess you are not a newbie with Bootstrap nor frontend design (so the book is not for you)"
Your guess is wrong. If you had put the repositories and themes up on GitHub and dropped the price of the book to $20, I would have glanced at the ToC and most likely bought it.
Not that I'm going to sue them or stuff.