The sales system is great, but people avoid putting to sell, if taking the trade for Gold in the trade would make everyone put everything to sell in the system and not sell by the exchange system.
I think to help this matter they should 1. Only tax items from broker IF sold. And 2. Also tax trade system. So if you are buying an item via trading someone it would also take a certain % of gold. Possibly even a higher amount then broker. Would make broker system invaluable. Also would make buying and selling safer and easier. Would not find the scammers trying to pass off items not what you asked for or advertized… i.e. buying ice spear and someone puts in trade meteor.