I read these once and then stored them in a dark place. There is no yellowing, but as shown in the fourth photo, the top of volume 1 is slightly bent. The other volumes seem to be fine as far as I can see. There are no problems with reading them. Please refrain from purchasing if you are looking for a perfect item, as it has been in someone else's hands once. I will package them to prevent water damage before shipping. Instant purchase is OK (please read profile). No individual sales.