Where do you buy auxiliary weapons on epicduel?

It varies, which Auxillary weapon you would prefer to have. For example you can get a range of Non-Varium zookas from Hank: Located at Fortune City, one other good place where you can get Credit only bazookas, it is at Mirv: Located at Barren Outpost. Underneath Fortune (Old) City there is an NPC named Exile Leader - he will always sell non and varium guns, auxillaries and more. Most of his weapons range between the level of 29-34.