You mean, the books are free?

Today, I went to my local library and checked out our next book - The Tea Rose. I haven't had a library card since the card catalog was still a thing. Typically when I'm looking for a book, I'll go straight to Barnes & Noble and buy it new, or if I'm trying to save a few bucks, I'll order it used on Amazon.com. Somehow over the years, I forgot that you can actually "rent" books, and when I got to the self-checkout machine (R.I.P. librarian careers), I automatically began searching for the place to put my debit card.