Does anyone know about the この一冊で合格 books by Nihongo no Mori?

Hello all!

So first of all I really like Nihongo No Mori. I think their videos are very good! I hear now that they have a book but it is over 500 pages! Does anyone know if there is a PDF version of the N2 book somewhere? It would be easier to study with that version than the big book when I am on the move.

Also to anyone who has the book, has it been a good source of studying for you?

Thanks!