I don't know if this has been mention before and if I'm repeating olde news I apologize.
With that said recently I was going on the Square Enix Account Management website and I randomly clicked on the " Information on Automatically Continuous Options" button. That was where I was reading about what was going on when I noticed the following.
Code:
Automatically Continuous Option Types
You can tell the option type by looking at the icon in front of the character name.
Character (if no character has been created yet: instead of the character's name, "Character" will be displayed)
Retainer (displayed as "Retainer" at first)
It appears their intention for the Market Wards is to force everyone to pay for these extra retainers so that we could have one in each Ward in order to be able to work properly with their item search feature in the future. I really do hope that I am wrong and that they add features to allow multiple ward searching or other Auction House reminiscent things.