Merchant is an auction house addon that assists with posting auctions and finding specific auctions. Features include:

• A framework for tracking actions.
• A basic stats module for calculating auction stats (like item average price).
• A tooltip module that can be used to display information about items in their tooltip.
• A Auction House module which features a batch posting interface.

Future features include (but are not limited to):

• More historical data keeping (currently Merchant keeps just the latest auction house image), including lifetime stats (like lifetime average buyout).
• A search interface, to search for items using advanced queries (also available when not at the AH).

Merchant uses AceEvent to emit several messages during the AH scan process and on many user interactions, making it very easy to write custom modules. Custom modules can be used both to display more/other information on the AH or tooltips, but can also generate statistics for use by other modules.