Costs of ebooks for libraries are actually disgustingly exorbitant and they also are "leased" out! There are great articles about this out there. I know it can be frustrating that libraries don't just buy a lot more copies, but publishers are definitely to blame here. apnews.com/article/libr...

Libraries struggle to afford the demand for e-books and seek new state laws in fight with publishers

Libraries across the U.S. are struggling to cover the cost of e-books, which have grown in popularity.