I own all the Dungeons. I live on a different continent. I still advance ordered it from Paizo. All this was months ago and my praise is coming somewhat late. My point is the campaign hard cover was worth it.
Excellent artwork, nice improvements over the original adventures, and so far the most memorable campaign I have ever run (and over 22 years I have run a few). You will play for well over a year so it ends up being less than $1 a session. Well worth the price.
All I can say is repeat for Age of Worms (and Savage Tide) and please make available as a pay for download PDF so I can search for keywords on my laptop. This book is so big it needs an index otherwise.