I buy in bulk items like toothpaste, dunny roll, tissues, bleach, washing powder,coffee,spreads, jams, pasta, rice etcetc when on special Milk, vegies, meat, fruit etc etc fresh every few days{ as fresh as it is when it comes from the supermarket anyway} I reckon I save heaps this way.
Today I notice the large jar of Moconna is now up from $19.99 to $21.99 at Coles; I buy it on special when it is $15 { whether at Coles, Woolies, Iga or Franklins}If I buy 6 jars I save approx $35 and so on. I have a tower of dunny rolls 16 packs by the dunny sometimes 5 high