Sadly, I'm still sitting at 16 pages right now, though the total count should be 17. I revisited everything after the world merge, right before entering Babil Tower, just to make sure I didn’t miss anything. It’s possible one slipped through from the first world in this run.
I’ve already been to the Auction House, but no pages have dropped this time. I vaguely remember getting that page the very first time I visited the town, so maybe that’s where the gap is coming from.