I find the way authors get paid for library books in the US fascinating. It's not as straightforward as royalties from direct sales. Libraries purchase books either directly from publishers or distributors, and authors receive a portion of that sale just like any other retail purchase. However, the real magic happens with Public Lending Rights (PLR) systems in some countries, though the US doesn't have a formal PLR program.
Instead, American authors benefit from library sales through collective licensing organizations like the Authors Guild, which advocates for fair compensation. Libraries also pay for digital licenses through platforms like OverDrive, where authors get royalties based on the number of checkouts. Additionally, many libraries host author events or purchase multiple copies, indirectly boosting an author's income. While it's not a fortune, having books in libraries increases visibility, leading to more sales and speaking engagements.