If a new edition is coming, there is excess supply, or the book is in poor condition.
If the book is not being used at UW but has national demand. uw bookstore textbook buyback
The bookstore typically only buys books if a faculty member has ordered them for the upcoming quarter. If they aren't being used locally, they may offer a lower wholesale price (around 10%–40% of retail) or refuse them entirely. How the Buyback Works If a new edition is coming, there is