Oliver Peterson: Australia correspondent on Australian supermarkets facing Senate investigation for profiteering - Heather du Plessis-Allan Drive

Australia's biggest supermarkets are set to be scrutinised in a Senate inquiry investigating their prices.

Coles and Woolworths have been accused of profiteering during an inflationary period marked by increased food costs.

Australia correspondent Oliver Peterson says the supermarket duopoly dominate the market- and people are feeling ripped off.

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