Cash, convenience and competitive prices—we will buy it no matter where you bought it! The CU Book Store will be buying textbooks Dec. 12 through 19 at the store in the UMC and locations throughout campus. Download our free "Sell Books" app for iPhone and Android for an instant price quote! You can also search "Sell Books Colorado" in the app store on your device. See website for hours and locations. You can also return your rental textbooks to any of our sellback locations.