I think setting up a COD system mailing option would be a great adition to the market, that way players can continue doing wat they are doing ( even if online and both players are 2 busy ) and sedn an item(s) they are wishing to sel to another player without the hassel of having to stop doijng what they are doing. a tax fee can also be implamented in this system the same way its done in an open trade..