Auctions are lots of treasure that characters can create and bid on. To start an auction, go to your character sheet's treasure page, click the item you want to auction, and then click the Auction button.

Minor Binding Poppet
Quality 2 Poison
Supply "Gaze Pin 2"
14.70 gold
Leech-berry Bane
Quality 1 Poison
Poison "3 Drain"
6.40 gold