Cells at Work! BLACK Set of volumes 1-8. Overall, there is some scuffing and creasing on the covers, and slight yellowing on the edges of the pages, but otherwise, the condition is generally good. I am selling these after reading them once. I would rate them as "average" condition for used books. *Please refrain from price negotiations due to my busy schedule. *Not for individual sale. *Not a rental item. Thank you for looking.