With the release of materia and further gear specific customization options, and the consistent demand for an Auction house, I was thinking why not have both features coexist with deferential purposes.

Market Wards would allow players to sell gear and weapons that are below 100% repair value, currently have equipped Materia, and other possible items that the Auction House doesn't showcase, maybe rare items, and +1,+2,+3 items.

The Auction house could sell all the standard versions of gear and weapons along side normal quality items.

Doing that could allow players to choose there own sale prices which is what I think SE wanted in the first place was.