An idea on npcing stuff...

Hopefully, this isn't an old/bad idea... Well, I know npcing stuff by mistake has happened to us at least a few times, but would you think it'd be good for nexon to implement a delayed expiration list when you npc something? When you npc something, it could appear on another tab for a set period of time. That way, if you accidently npc something, you can buy it back. Could also be the option for other players to buy the item if they want from the noc... This is just a random suggestion though. Yeah I know it's sometimes the fault of being lazy or not careful, but don't you just hate it when you npc something by mistake... o.o

A buyback option doesn't seem too farfetched to me. A few games in recent memory have had them and they were pretty useful.
Either that or one of those cart operations, where you sort out what you're going to sell and what you will buy [quantities specified] and then finalize the entire transaction with a click of your mouse. Includes a log at the end showing total meso spent/received.

I'm sometimes pretty hasty when npcing or storing stuff, so I don't pay attention to the npc sometimes, sorta my fault on that. Wish they could make the storage and store menu ui's a little different at least...

Great idea, I once NPC-ed my Ilbi Throwing stars

WoW got that, too.