Bartering is an important part of progression in Avalon; you may at various times wish to interact with the shops, merchants and other people in the land.
SELL <item> Offers your item for sale to a shop/merchant.
BUY <item> Buy specific items from shops.
GOODS Lists items being sold by a particular shop.
GOODS <item+number> Gives you detailed information on an item.
GOODS <item type> Lists items being sold by shop of a certain type.
STOCKS <item> Lists all items for sale of a particular type.
GIVE <item> to <person> Gives one of your items to another person.
APPRAISE <item> Gains a rough idea of the selling price of items.
OFFER <CCC> <gold> FOR <item> Barter with a CCC.