I just got the following message:
"The traders look at you funny as you try to sell them some of their own Food. It doesn't look as if they took it to be especially funny."
Here's the situation:
* I'm the Banker of a realm, and until just recently we had no traders. So I sometimes have to move food myself to isolated regions. I bought 200 food, and repaired. Then a player just un-paused her character, a trader. Great! I can have the trader move the food for me. Since I can't sell food directly to her, I try and sell it back to the region. The region has an open "Buy" order, for the same price that it was selling food at.
However, I get the message above when I try and sell it.
I was about to open a Feature Request to allow this in the BugTracker. But before I do so I wouldn't mind hearing feedback on this. To me it seems fine -- if a region has a Buy and Sell order for the same price, what is the problem? In some industries companies buy wholesale, and return what they don't use or can't sell.