When ND switched those static $ symbols out for the $/cart, they also changed to a different prompt that contains a PS Store link as the third option. That prompt is inaccessable/does not exist in the offline modes (don't know which), leaving the first player incapable of buying almost anything with in-game cash that has a DLC option (the Nathan Drake skin and Custom Hero's Ammo Vest were never switched over to my knowledge). The guest can use in-game money for purchases because ND decided guests shouldn't have PS Store options.
To that end, there are only two things you can do as far as I know:
- PM MacGruber310 and hope he can do something (ND has never liveupdated the offline modes to my knowledge, however).
- Try deleting only the patch data and loading your offline profile on an unpatched UC3. (Don't blame me if this goes bad, I have no idea if the vanilla game will work correctly with an offline profile that's been played on 1.17)
If ya wanna know anything else, check here first (slightly outdated).