The page count is not a typo. This edition has a several-page interview with Brandon in the back that includes questions from various other interviews, including:
https://www.fromthedesk.org/10-questions-brandon-sanderson/
https://www.publishersweekly.com/pw/by-topic/childrens/childrens-authors/article/78458-q-a-with-brandon-sanderson.html
https://www.getunderlined.com/read/brandon-sanderson-answers-your-questions-about-skyward/
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