Sts could also make vials wanted for some recipes in future.It is almost wothless farming in arena.Low drop rate of arc fossil and even if you get vials its only 10k in auc(same as the price you can delete it from your inventory)And for those who may think that 10k is enough consider that in order to loot that 1 vial, hours for farming.(usually) are required.Time which could used to farm lockeds and make more profit