For excellent bargains I usually purchase from the Md stall at nearby Laverton Market, where the owners sell their products on weekends. You can get great prices on toilet npaper, dishwashing liquid, paper towels, laundry powder and disinfectant. For example, you can get 20 litres of dishwashing liquid for $25. It comes in big drums and I buy it once a year, as long as my husband doesn't forget to close the spiggot and let it run out on the garage floor!
Weekdays you can buy from the above address.