Lab manuals and other custom CU-specific publications typically have no buyback value.
Money for sold-back textbooks is typically given in cash at the register. cu boulder bookstore buyback
You can download the "Sell Books" app (search "University of Colorado" in app stores) to get an instant price quote before heading to the store. cu boulder bookstore buyback
The best time to sell is during Finals Week . This is when the bookstore is actively stocking up for the next term and offers the highest rates. cu boulder bookstore buyback
If your book has no buyback value, the bookstore sometimes coordinates with organizations to donate old texts to schools or correctional facilities. Sellback - CU Book Store