A complaint about the "special" price of dog food at a Countdown supermarket has prompted a flood of similar claims.
This week the Commerce Commission launched an investigation into Progressive Enterprises-owned supermarket Countdown after allegations it had been advertising specials on products not discounted.
Last month Wellington shopper Andy noticed Purina dog food was advertised as a "special" for $23.99, though its original price was also $23.99.
"These 'special' tags are identical to all other special tags throughout the store, indicating discounted goods - except that these ones do not have any discount," he wrote to Consumer New Zealand.
Another shopper, John Murphy, said he found biscuits advertised as two for $5, or $2 each at Countdown.