Selling used books online falls into two main categories: (where you sell to the website itself for an instant quote) and marketplaces (where you list your books for individual buyers). Top Buyback Websites (Instant Quotes)

: Known for high-quality standards, they often pay higher prices for books in great condition, though they can be selective based on their current inventory.

These platforms are best for quick sales. You enter the book's ISBN to receive an immediate offer, and most provide a prepaid shipping label.