I thought there was a mechanic that was started so that while we opened parcels we would get Pages we did not have before we started duplicating. but as you can see - - - -
one of hat was traded for but the rest are all from parcels
Not for the newest ones. That mechanic is for the goodie bags that contain stuff from previous (mostly 2+ years old) events.
For the current event, it's totally possible to end up getting duplicates all over. It's designed that you'll trade with others for the ones you're missing.
i have my main house (grand topal hideaway) listed in the housing tours, it has multiple target dummies, scribing altar, and grandmaster stations (in progress being filled out), as well as almost every antiquity furnishing on display to preview them