Business owners surrounding Costco’s Auckland warehouse are expecting a ‘big halo effect’ when it opens its doors on Wednesday, Stuff reports. Dave Hargreaves, owner operator at Mitre 10 Mega Westgate, says having Costco open across the road will bring more customers to the area. “It’s going to bring much more traffic into Westgate, an already fast-growing area, and really accelerate growth in West Auckland,” Dave said. “There’s minimal crossover with our business and any detriment will be outweighed by the benefits,” he added.