I agree there would be some barter either goods or trades but I thing the bulk of kills , production, discoveries would be centralised for the benefit of everyone, anyone not pulling there weight would be endanger of penalties from say reduced rations to banishment, those who do exceptionally well in their respective roles might gain increased status , maybe an increased in rations or perhaps their choice of mate for the night or maybe two mates for the night.<br/><br/>Currency that we know it would be for decoration alone unless there's a smelt operating for the coins to be melted down. To have coinage as a means of purchase puts all the financial power in the hands of those who explore and work the ground