Quote Originally Posted by Shadex View Post
From the patch notes:

Once a retainer is placed on estate grounds, items that they currently have listed for sale on the market can be purchased by anyone who speaks with them. The retainer's sales history (up to 20 entries) can also be viewed by other players.

Sounds to me like they are nothing more than another way to interface with the MB...
uhh....yeah....as in, the 20 items that that retainer specifically has for sale.
You wouldn't be able to access anything else but what that SPECIFIC retainer has.

It's silly and probably not needed, but it's an interesting idea.