My dexxer for spawns uses tinker legs , paladin arms , Balron armor, feudal grips and mace /shield helmet from blackthorn. So only neck piece is what I have looted. Even though I am often wearing gladiators collar(replica) which I have plenty.
Yes , for sending warriors to other shards I give them legendaries . But really with latest event pieces demand for looted armor decreased.
Neck piece with huge fire resist will always be in demand. Rest is OK too , but if (for example) gloves are more expensive than feudal grips - I will choose grips.
If piece with 5 dex 10 stamina can be altered to gargish - it can increase price.