TankinatorFR wrote: »
How do I add sets to my collection?
Each time you equip, deconstruct, fence, research, or NPC vendor sell (not sell to players using the Guild Trader system), the item will be bound to your account and added to your Item Set Collection.
Note that when selling an item set to a vendor, it might take some time before that set is added to your collection (it has to clear the buyback period first).
MasterSpatula wrote: »Selling a set piece also adds it to collections, though from what I could tell this means it gets removed from the buyback menu.
Basically anything you do with an item which means it can't be sold on to another player will add it to your collection.