I agree Catherine about reselling books. Every book in this lending library has been donated by someone (some by me as when I buy a book I'll normally put it in for others). I have found that when someone takes a book from this library and really likes it they want to read more of that author, they'll go and buy them...then donate them to me.
Ture I have many readers who never buy books (mostly because they are living on a fixed income) and depend on my library for books.
Many times when I am in there, someone will come in to return a book and ask if I have more of that author, if I don't I'll look to see what they are returning, and suggest other authors like that. Some people seem to pick a few authors that they like and are afraid to try new ones...I'll pull out a few and say 'take these and try them, if you don't like it, just bring it back next time you are here (and our library is in our club house and everyone has to come there to get their mail)and try some others. There are times someone will stop me while I'm out walking and say 'I just love the book to told me to read!' Makes me feel good.
Of course anyone reading romance will first get a CA book in their hand and 2nd is SEP.
So know that when someone gets hooked on an author and can't find more, then they go out and buy them, then they get recyled to me!
East Coast of Central FL