From what I understand, calamity salvager use your achievement to check which glams/item are available to you.

I propose addition of an achievement for single character glams from the mogstation, so they they can be retrieved from the calamity salvager if you accenditally delete one. Currently, if that happens, you can use your "One time only retrieving an object". So if it happens to you second time several years later, it's dead, you lost your paid item forever. It's a digital good, there is no reason for you to not access it once you paid for it.

I'm grasping on straws here, but I feel like losing that kind of object is more of a reason to never buy anything on the shop than pushing you to re-buy the item (and that the rebuy of an already owned items is rather fueled by buying it for an alt), so wouldn't it be a good move to allow people to get back their paid items from the calamity salvager?