Nilfisk BA650S abrasive scrubbing pad holder, complete with a spiky pad retainer.
These items are sold singly and two are needed for a set.
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!