Ok, just out of curiosity, say you were playing through the main story mission on, say, your third UVHM playthrough. You get to the point where you have to buy an upgrade from Crazy Earl and you’ve either already bought all available upgrades or you don’t have enough moonstones on you to buy one because all you have left are the 100/150 ones. What happens? Are you stuck?
I remember in Bl2, on TVHM and UVHM playthroughs, when you got to the analogous spot, it triggered the “buy upgrade” checkbox without actually buying anything, but that’s not the case in the Pre Sequel.