AGL Sales Pty Ltd (AGL) has paid a total of $799,656 in penalties after allegedly failing to calculate its ‘deemed best offer check’ in line with the prescribed formula for 22 customers over the period March to June 2022. An energy retailer’s ‘deemed best offer’ is typically their cheapest generally available offer. It does not include one-off gifts or sign-up credits and is based on customer energy usage over the past year.