Suggestion:
So for example, if I were to search for an item, lets say Supple Lead Viralbots, I would be able to click a tab or button and see the last ~10 sales:
<2013-10-21>: QL 121 Supple Lead Viralbot | Buyer | Seller | Price
<2013-10-24>: QL 101 Supple Lead Viralbot | Buyer | Seller | Price
<2013-10-28>: QL 203 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-02>: QL 300 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-05>: QL 297 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-12>: QL 214 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-14>: QL 150 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-14>: QL 130 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-16>: QL 226 Supple Lead Viralbot | Buyer | Seller | Price
<2013-11-18>: QL 231 Supple Lead Viralbot | Buyer | Seller | Price
Possibly you could even limit your search to only see sales from QLs between X and Y.
Why?:
It would bring more stability to the market. As well as provide people with a hunch of what the AO players consider each item worth. Leading to fairer prices.
It would perhaps inconvenience a few greedy people that try to "play the market", but for most of the players this would be a good thing. Not least for new players, which seems to be the focus of the staff right now
It will not fix the high prices of certain items, but it will be a big step in the right direction at least. Don't you agree?