I don't know if the Devs have been following my rant thread over in the Rants about Nadia...
But a very good point has been raised, and I'd like to make a suggestion.
Consigners are the best way for people to sell things. It is present in nearly any other MMORPG in some shape, form, or manner. The ability to sell things without real-time interaction, without both parties of the transaction being online at the same time, and without any prior communication.
We have something like that in Istaria, the Consigners.
The problem is, people don't want to consign things, and lose lots of money if what they listed didn't sell.
What I propose, is a tweak to how the Consigner system works. Right now, a 10% up-front fee for even listing an item is much too high. You could easily blow 100s+ in listing items that might not even sell at all. I propose a better system:
Make it so that you pay 1% up front when you list. Listing an item for 100 silver would cost you 1 silver. When the item sells, an additional 9% is subtracted from the proceeds (in this case, 9 silver).
Each consign still costs 10 silver for 100 silver item, but with my method, the risk of listing isn't anywhere near as high. Then, maybe players won't be so adverse to list things again.