A remarkable product, and in this (expensive) form probably only for the real Beach Boy fans and buffs. That said, it is a treasure trove of information including many sessions/outtakes and newly written reminisces by many people who were intimately involved with SMiLE. Bootleg versions of all this material, and more, have abounded for decades but you will never beat this for the breadth and depth of material combined with the superb audio quality (but do remember, this stuff was recorded in the 60s!).
As has already been pointed out elsewhere on these pages, the decision to store the discs in cardboard pockets in the large folder is a stupid one, and could only have been made by a designer more interested in form than function. The discs are prone to marking by the card edges, so be very careful or better still, store the discs in paper sleeves separately within the box (there is plenty of room!).
An amazing historical collection!