How about a trading system using the present trade system :
what we have now : u right click a player hit trade a trade window opens u add the items u hit confirm, the other players' hits confirm then 1 more round of confirmations and trade si done
what i suggest based on the current trade system u set up a stall like an NPC like all over eldevin
and u haw the same 30 spots for sale as u have now in trade u put and item there and u set a price to it like the NPC . the player comes opens your stall sees what u have clicks on an item and they have to confirm 2 times if they want to buy ( the seller gets 2 auto confirm because he is assuming the price of the trade because he set it ) after the second confirm the EP / Gold is transferred to the seller mail or directly in hand or what is simpler
PS
1. make the 30 slots trade window upgradeable like the normal bags
2. u can only sell when u are on line
3. this idea can be upgraded more with use of the crafting system as for every 10 levels u can craft a new looking stall for every profession too look different .. or something but that is for future upgrades or ideas.
seems simple to me .. minimum effort maximum effect
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