There should really be a buyback slot so you can buyback the stuff u didnt mean to sell. and every time u log off u cant buyback the stuff you sold that day.
Bazzar (buyback slot)
If your going to get your stuff back, you can't. For the hall of heroes, call it a mistake. But as for the auction house, nobody can do anything to it. It will upset the users and they will complain saying that they worked hard for the item.
Auction house is controlled by players, and OOO cannot do anything to both. If you are sure that you want to sell it, then do it. You can't just rush
"and every time u log off u cant buyback"
No. Give you one chance if you havent left the area. Silly, but why would you need more time to realize your mistake?
I have this crazy idea of someone selling all his stuff to snipe an auction, hoping to get it back by playing later. (it would be funny if this was actually real and the game kicks them, but I'm not that evil)
If you think about it, shouldn't recipes sell to NPCs for the same price?
If you got it from an NPC you would make 0 profit, and if you got it from the AH, you would lose money. This will also help people when they accidentally buy duplicate recipes or to compensate those who already had the recipes that they give in the missions.
No, don't be stupid and sell the stuff that you want to keep