Thanks for your response!! I found an old post on the spiderweb forums that seemed to suggest that there was an old bug that made it individual rather than combined, so I'll play around with that.
The answer I found for you is that (in the original game) it IS based on the party total for the stat, but it does nothing for items that are pre-placed in a town or dungeon. It only works on items that drop.
I think OpenBoE is doing it the same as the original, but could double-check. This would explain why it’s not affecting the Fort Talrus supplies.
