I haven't gotten all of it, and I haven't read all of what I have gotten... so really all I can say at this point is: It definitely has page count.
The production quality is decent, as it has always been with Frog God Games.
...actually, I can also say that I managed to buy The Borderland Provinces because I am running a Rappan Athuk campaign and thought it would be nice to have the broader surroundings available without having to reference 3 or 4 different sources as I had been doing up to that point. And that campaign is exactly the reason I haven't read much of the book; it has effectively moved rivers around and stuck Bard's Gate which I had been using in the campaign previously much further away, so I had to choose between changing details of the campaign drastically or not using the new book, and I made the choice that required the lesser effort on my part.