As you head to the supermarket to stock up for your Christmas lunch you can try and shop around for a deal, but it’s not easy with Coles and Woolies dominating the market. 

According to the Greens you’ll be paying too much, because they accuse the big players of price gouging. 

It’s an allegation the supermarkets deny. 

Today, ABC investigative reporter Adele Ferguson discusses why an inquiry into the duopoly is needed and how regulation could help consumers.

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Adele Ferguson, ABC investigative reporter