The Starmaid 52L Tubs are notable for their quality and durability and have no wheels so are easy to stack.
These are only available in-store and discount price appears to be only for the clear boxes. Normal price at Big W is $15-$17 each.
Edit: combine with 5% off Wish Gift Cards (via Cashrewards) for greater savings.
Or on sale at Masters for $29, lol
https://www.masters.com.au/product/101757820/Starmaid-Storag…