I am looking for a reliable source to help me find buyers for used books in bulk in the UK. My goal is to efficiently sell a large collection of used books, covering various genres, including fiction, non-fiction, textbooks, and children's literature. I seek assistance in identifying potential buyers, such as bookstores, libraries, and online platforms targeting bulk purchases. The collection consists of over 500 books, all in good condition. If you have experience in this area or useful contacts, your guidance would be invaluable.