Reclaim Your Essences
Always, always, always reclaim your essences unless they’re green. If a piece of gear has only green essences, you can vend it but if there is even one blue or gold essence, use a reclamation scroll before vending. If there is only one purple, it depends on what it is and how hard it is to find but you should probably reclaim it.
Reclamation scrolls are also expensive (500 LP in store) so use them wisely.