Basbanes devotes a whole chapter to "Three Little Words"- rarity, scarcity and value - in his book, On the list of Gently Loony.
I think that the answer generally that everybody's experience is distinct. Ender, however, is not your typical sci-fi plot. https://Takesavillage.club/groups/young-adult-books-came-out-of-this-closet/