Will it be an Ikea 'meatballs moment' when Costco throws open the doors to its giant store, just announced for Auckland's Westgate? How many people will visit the American-style bulk discount retailer, which in Australia sells everything from giant teddy bears to coffins? How will its goods and prices differ from what we already have? And isn't this just all empty consumerism, blighted by plastic and more stuff we don't need? Anne Gibson delves into expert opinion about how Costco could bring big change.

Costco Westgate will get millions of annually shopper visits, customers drawn to its 25 to 30

Costco by the numbers