Dropper is an addon designed to simplify the process of farming old raids/content for gold.
Open a merchant, type /dropper and voilà, a window appears that can help you mass-sell any soulbound boss drops from that instance. It does not sell/discard Illusions, Mounts, or Pets.
More raids and then in future instances, will be added over time as I generate the loot-tables for them.