90% of my books are bought used, not from B&N or another new bookstore. Even when I buy new, I do the buy 1 get one 50% off or go to the local bookstore and get their 10% off staff picks. I don't remember the last time I spent full price on a new book.

I do check out ebooks and audiobooks from my library, but I prefer reading physical books and not having a deadline, so I prefer buying. I'm not rich or anything, I just don't go crazy and try to keep my buying in pace with what I actually read.