I assume we're talking about books. A printed set of the Britannica costs hundreds of dollars.

https://www.ebay.com/sch/i.html?_nkw=britannica+encyclopedia...

They aren't in print anymore for 2025, but World Book is here: https://www.worldbook.com/world-book-encyclopedia-2025?srslt...

But even if it was only $100, imagine having all of that information and more in a watch on my wrist for free. That's basically what Aris does, and we are doing our best to make sure parents can control the information and perspectives their kids get.