I acquired all of the "special" runes on the SoP content when I played it on release but only now it has come to my attention that the resistance merchant's inventory doesn't refresh.
Is it not possible to acquire more copies of those runes? If I accidentally sell them are they just lost forever? Not that there is anything game changing about those but it would be a shame to lose something that is irrecoverable. I saved the game and sold those runes just to see if they would show up on that merchant's inventory again but as expected, they didn't.
If that is the case, is it a bug or is it yet another one of those genius things in this game that doesn't make sense/works properly per "design choice"?