The print quality of the book isn't much above printing on my printer here at the office (admittedly a nice printer). The binding appears to be simple glue binding for the big book, and I think it was saddle stapled for the other two (might have been glued, don't have here to confirm).
It's big, three books: one being the adventure (huge), the other monsters (all fully statted, very nice), and the third just maps. Though the cover is very nice, it's the same cover image for all three books, which is the same as the box cover. I paid $47 on Amazon for my copy, which was just a few bucks more than the PDF version, so to me, it was worth it. I don't think I would have paid $75 for a glue bound book and two saddle stapled books, a cardboard box and non-gloss, copier quality printed pages within.
Adventure wise, I haven't read much yet, I am waiting to see if my DM is planning on running it before I delve into it to run for my other D&D group. I never read the original, but it came highly recommended, so to me it's a win win, I get the original adventure and the new stuff, all converted to 3.5. Hopefully it lives up the type hype, worst case, I will always have an adventure to toss at the players.