We can not imagine and we do not even try to imagine the world without trade. Perhaps some twisted people seeking Utopia would be able to get around this, but we call them the M’s philosophers and it is not worth mentioning them at all. Trade is already taking place even of primates and this is scientifically proven. Trade is indispensable because man alone is not able to learn everything and work for all other professions. That’s why he can stick to making boards and buy shoes from someone else. Trade relationships between players are different, because trade is not free market
Diablo 3 Trade 