A recent report by consumer group CHOICE reveals that Aldi offers the cheapest groceries nationwide, with a basket of 14 products priced at $51.51, 25% lower than Coles or Woolworths. The survey conducted in various Australian states highlighted that Tasmania, the Northern Territory, and Western Australia pay more for groceries due to limited shopping options and absence of Aldi in some areas. Despite criticisms from Coles on transparency, the government-funded quarterly survey aims to enhance competition in the grocery market amidst rising living costs. West Australians, except for Tasmania and the NT, face the highest grocery prices, with Coles being the most expensive in the state.