There’s been a lot of noise lately about the cost of butter in New Zealand. From headlines to parliamentary soundbites, much of the discussion has centred on a particular claim: that Costco is shaking up the market by offering butter at a lower price than traditional supermarkets. But is that really what’s happening?
A closer look reveals that the price tag at Costco tells only part of the story.
Yes, currently Costco is selling butter at a lower price than most major retailers. But this isn’t a sign of broader grocery reform or a blueprint for national pricing change. It’s a classic case of a loss leader – a retail strategy where key staples are sold at or below cost to attract shoppers into the store, hoping they’ll purchase other, higher-margin items while there. Butter, in this case, is simply the bait.
This practice isn’t new. Most supermarket groups in New Zealand use similar strategies – discounted milk, bread, or seasonal fruit – to increase foot traffic. However, not every store chooses the same product to mark down, nor can all retailers absorb the same level of loss. Costco, with its bulk-buy model and membership structure, is playing a different game altogether.
Finance Minister Nicola Willis recently cited Costco’s butter prices as evidence of competitive pressure and suggested other retailers should follow suit. But this oversimplifies a complex pricing landscape. Costco’s pricing is not a viable benchmark unless other banner groups also decide to take a margin hit and position butter as a loss leader, something that’s unlikely to happen across all banner groups.
So, why is butter expensive in New Zealand?
Simply put, it’s because New Zealand butter is in demand overseas. As a premium export, it fetches strong returns in global markets. These high returns reflect well on our economy and on the dairy farmers and cooperatives behind the product, but they also contribute to higher domestic pricing. Local supply is influenced by global value, and when exporters are commanding premium prices offshore, there’s less incentive to discount heavily at home.
In short, Costco’s butter pricing does not signal a broken market suddenly being fixed. It’s a calculated retail tactic. Until other supermarkets choose to take the same approach – and absorb the same financial loss – Costco’s low butter prices are the exception, not the rule.
New Zealand butter remains one of the best in the world. But that reputation comes with a price – one largely set by our own success on the international stage.
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