The Associated Press reports that Scholastic said that of the twelve million books printed, several hundred have pages missing.
And this is to be expected I guess. It is one of, if not the, largest initial print run in history.
I did buy an anthology many years ago of short horror fiction and while I was reading it I noticed that it had a chunk of pages in the middle duplicated. I went back to the store and they happily exchanged it but it was a weird experience. People come to trust books in many ways and to see one flawed like that was just unsettling in some way to me.
It's a bit frightening to wonder if any of the as of yet unread books lining my walls are defective...