They don't look like they've ever been read. It was even hard for us to take a picture of the page with the printing date information as we didn't want to crease the cover.
The very tip of the top right corner of book number three has a tiny bend, most likely from when someone was trying to fit it back into the box. The only wear on the books themselves are on the spines where they were not protected by the box. Please see pictures for details. The box does have scuffs, primarily on the bottom and where it says Ballantine Books on the side, but on the other surfaces also. If you like vintage books please check out my store.