Several studies have examined supermarket access for low-income residents, but few have explored how access to healthy food changes when a new food retailer such as a farmers’ market opens in a place previously known as a ‘food desert’. This paper uses a ‘before and after’ approach to examine the impact of the introduction of a farmers’ market on the price and availability of healthy food in an underserved urban neighbourhood. The farmers’ market had a major impact on grocery prices in the neighbourhood, which decreased by almost 12% in 3 years.