Market board auto buy under priced items.

I currently make about 3-5k everytime I goto the market board buying thing people put up for cheaper than the NPC price and walk over to the NPC and sell it. 30-80 gil an item but it adds up nicely when I buy 15 axe heads at 40 gil and they sell for 79.

To reduce Gil creation, could you put an auto buy when someone puts something on the market boards for cheaper then or equal to sell price. This would get ride of junk items in the game and prevent items from crashing too low.

This would also make it so I could get ride of junk on my retainers by putting it up on the markets for NPC price without having to move it to my inventory and then find a NPC to buy it.