Nilfisk SM800 and the ALTO Floortec 480M Sweeper Side Broom. These are black nylon bristles and 2 are needed on each machine. This is the part number and price for a single brush.
Maximise the saving on postage and buy several Puregiene toilet rolls a box of Tissues and some soap or maybe some packets of dustbags, or a hose or a new floor tool, or some other accessories!
At the moment, standard postage within Australia is capped at a maximum of $20!