I am sorry to confess that the DFD book is going to be a might shorter than I had hoped. I've cut an essay from it that just wasn't working. I wasn't happy. This leaves a total of approximately 27-28K words, or around 122-128 pages. A bit longer than the last essay book, but not the moon. Sorry that it can't be more.
I just haven't got the sand to write another essay. I'm pretty near burnt out on the subject of dungeons.