For your consideration, here is a Lot of 2 GURPS Game Manuals, 4th Edition, HB Books, by Steve Jackson, Sean Punch and David Pulver.  They have wear on the covers.  PLEASE NOTE:  One has a broken spine, but is holding together alright.  I took a photo of it.  Items pictured are the actual items up for sale and come from a non-smoking household.  (678.3c10a-5.15hc)

Here are the books, with the copyright, pages, and condition notes:

1.  Basic Set, Characters, last copyright year 2020, 336 pages, with blank character sheet in the back, one page has a crease in it

2.  Basic Set, Campaigns, last copyright year 2019, pages 338 - 575, has some wear spots on the covers.  PLEASE NOTE:  The spine is broken at the bottom, but is holding together.