Nilfisk WD215 and WD225 and Electrolux Euroclean IQ215 and IQ225 wet and dry vacuum cleaners and the Nilfisk WD245 and the Electrolux IQ245 wet and dry commercial vacuum cleaner pre-filter, to protect the rectangular main pleated filter.
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!