[bombcar]

The "best selling" lists have some pretty "strict" criteria, and they're all kind of lame, even if arguably some are there to prevent "gaming" the system.

And "best selling" as a substitute for quality doesn't hold that well, either.

[PuppyTailWags]

"Best selling" by the NYT has its own algorithm which weighs audiobooks, ebooks, indie vs big store sales, etc. all differently. Additionally I would suspect selling children's books would have to compete with school-sized purchases. 25k over a year is great, but in the realm of children's books you're dealing with Scholastic magazines book hawking to every school in the nation.