I suggest that in the shop for the “Always-On” section, for the items you have bought, the key price should be replaced by a green checkmark, to indicate that the player has already bought it.
Sometimes you need two of ſomething, e.g. ſatellites and weapons for two different ſpacecraft.
But the “Always-On” is permanent…
Oh, right, I was thinking of ſpaceſhip equipment. I think it’s fine how it is, though.
If they can afford quality-of-life changes, why not?
Tried to implement this, but it backfired: there’s also “Always-on” equipment that you can buy multiple times (e.g. “Extra Slot”)