The sportswear giant has refused to budge over the price of the jerseys, and has pressured overseas websites to stop selling them to New Zealand.
But a survey of adidas products reveals national borders matter little when it comes to the company's production.
Its All Blacks rugby balls are made in Pakistan, scarves in Turkey, beanies in Taiwan, jackets in China, and jerseys in Thailand and China.
Oxfam New Zealand executive director Barry Coates said that diversity reflected in part the specialised production in different countries.
"Sports equipment and balls were hand-sewn, and that has been a particular speciality for Pakistan.
"Thailand has had a lot of the shoes in the past, China has had more of the long, simple straightforward garments."
Mr Coates said companies such as adidas also produced in several countries to minimise spread the risk of supply disruption.
"When the political turmoil was happening in Thailand, there were production cuts there."
The cost of making a jersey has been estimated at $8 or $9, and Mr Coates said wages as low as $1 an hour in some adidas factories in Asia were unacceptable.
He said adidas needed to calculate and pay its workers a living wage, as the minimum wage in developing countries was often much less.
Dr Mike Lee, a senior lecturer in marketing at Auckland University, said it was galling that a global company such as adidas was trying to ring-fence New Zealand consumers.
"They want everything open so they can get it manufactured the cheapest and sell it at the highest, but ... they shut down our ability to essentially use the same free market that they want to operate in.
"They want the best of both worlds. And that's the irony that I suppose really gets on people's nerves."
Dr Lee has studied past examples of brand avoidance and said adidas' handling of the jersey prices had given consumers a moral or ethical reason to boycott its products.
