Legit

[Gotien]

yeah without dupes you can run to red boxes shouting "oh my god a rare please be better than the one i have now" then get disapoited by the fact that its a varista

Varista, Gae Bolg, Custom Ray, the list goes on and on, as for getting rid of the items, just use them until you find a sufficient replacement. Not necessarily the same or better item, just one that'll suffice, when you know you found the item, it obviously cant be a dupe.