The CE, both the 10th Anniversary Box and this, is not 'pound for pound' worth the investment on material and e-goods alone. But if you're particularly into fan-collectibles then they do present a fairly one of a kind opportunity when they come with 'all frills' such as the signed lithographic art.
As with any collectible, you're paying a premium for some minor guarantee of rarity. The book itself is already being sold on sale and was the subject of a Valentines sale on the Musterbrand store last I checked, so if you just want the book, I strongly advise going the most economical route possible as there is no attached resale or collector's item benefit to ownership.
