4L Duo Laundry Liquid Detergent $6 + Delivery ($0 C&C/ in-Store/ OnePass/ $65 Order) @ Kmart

Great price, big w is selling it for $17.50 Free shipping with OnePass.

Also 5kg Duo Laundry Powder Value Pack $6

Features

Wild lily and jasmine scent
Suitable for both front and top loader washing machines
Brilliant stain removal and soft on clothes
No need for fabric softener
Built in softener formula
Cleans and softens
2 times concentrated
Brilliant wash in cold water
Grey water friendly (rinse cycle only recommended)
Anionic surfactant: Lifts out dirt and stains
Fragrance: Provides deep freshness
Softening: Provides softness