One thing I think makes PS3 collecting around the time where at least full-set collectors might not care so hard is that there are at least a few "coasters" - games that literally do not function AT ALL anymore. OP ( @Joyomofrobro )has one in their photo:
Square no longer supports FFXIV on PS3 - you literally cannot play it at all.
Same goes with actually one of my favorite FPSes of the console - MAG. Both of these games were online-only, making the discs entirely useless.
Granted, they're not rare by any stretch, but when you start looking at, for instance, the expansion packs released for FFXIV prior to their stopping support for it, maybe those ARE a bit rare. There are CE's for them, too, with statues and the whole shebang. Good luck with those, and again - they're all COASTERS.