I noticed that armors are not worth anything to vendors even when identified. Is this a bug?
Armors are worth silver as long as they are not the random stat equip.
The reason why these armors are worth 0 silver is because they drop pretty often, and given the system of how the silver worth of items depends on level and category, selling those items to the NPC would flood the server with silver.
Even if they’re not worth any silver, they can be disassembled or fed to gems for EXP, so you don’t really lose much in terms of actual gameplay worth.