She told Metro.co.uk: "In New Zealand, Domino's is often viewed as an affordable pizza place where you'd go to get pizzas for parties or on a hungover Sunday because it was so cheap.
"We would never dream of spending that much on Domino's and have never been back since."
And Aussie Sam Borland-Smith, 23, said he went from going to Domino's regularly with friends back home to never visiting branches in the UK.
"It's hard to understand how the exact same product, from the exact same brand and business, can differ so drastically in price. It's ridiculous," he said.
Domino's spokesman Nina Arnott said: 'The taste of Domino's is unique, with great quality fresh ingredients.
"The average price our customers pay for a medium cheese and tomato is less than £8 because of our competitive deals and bundles and we believe this offers fantastic value.
"International comparisons do vary greatly, including, rent, petrol, labour and food costs - for example, in the US sales tax, can be as low as 7 per cent in some states, whereas here in the UK VAT is 20 per cent."