Trade Aid Dunedin senior supervisor Helen Ransby said the in-store event was all about celebrating fair trade and trying to put it on the map.
Fair-trade goods were better for people from developing countries economically, socially and environmentally, she said.
It was also the 50-year anniversary of Trade Aid, which was started in Christchurch as a pop-up shop in 1973.
People had really got on board with the day, Ms Ransby said.
While the store sold a range of products, its most popular goods were coffee and chocolates.