NZ's most expensive supermarket revealed

New Zealand's most expensive supermarket has been revealed in a Consumer NZ survey.

CEO Sue Chetwin told TV ONE's Breakfast out of the stores visited across the country, it was one in a middle-class Auckland suburb that proved the most costly.

"It's really hard to compare against cities but the most expensive was a Foodtown in Glenfield, and generally Foodtowns have come out more expensive in our survey - so it will be interesting to see how they come out when they become Countdowns," she said.

The survey compared the price of a trolley of 40 identical items in different stores around New Zealand.

This year's list had double the number of items from previous years, adding basic frozen food, spreads and canned food to the traditional basics such as bread, milk, sugar and butter.

Pak 'n Save came out as the cheapest supermarket overall, for the eleventh year running.

Chetwin said shoppers are well aware of the potential savings from shopping at the store.

"Pak 'n Save actually don't have as big a range as other supermarkets," she said.

"You get what you pay for - they're a no-frills supermarket, minimalist, not quite as wide a range but you can get things there more cheaply."

The survey also found that grocery prices had gone up by 5.5% in the year to March.

Source: TVNZ - view video