Got into bazaar via nexus got to the building in the center, the first merch on the right sells bags in his top slot.
Buy the bag <weight is high so remove it when you leave bazaar.>.
Stand you char in amongst the many others, placing you items that you wish to sell in the bag.
type: /trader.
click on the items and set the prices followed by 'Add'
hit begin trader.
thats it, my work here is done.