In the context of rising inflation, a study by A3 Distrib, shared by Olivier Dauvers, analyzed 91 million prices recorded across more than 7,000 stores in France. The research identified the five departments where online shopping is the most affordable, based on comparisons of identical products from major supermarket chains in August 2026. Delivery charges were excluded from the analysis. The Vendée and Haute-Marne both achieved the highest rankings with a price index of 97.1 out of 100. The Côtes-d'Armor followed closely with an index of 97.3, then the Mayenne at 97.4, and the Finistère at 98. These regions are largely located in western France, where supermarket chains such as E.Leclerc, Intermarché, and U are common, possibly influencing local pricing strategies. According to another study by Que Choisir in September 2026, E.Leclerc is still the cheapest supermarket chain in France, with Hyper U and Intermarché coming in second and third, respectively. Carrefour and Auchan are more expensive, with a representative basket of 150 euros costing around 20 euros more at Auchan compared to E.Leclerc. However, prices can vary within the same chain due to factors like local competition, commercial rent, store size, and the presence of large stores in suburban areas. In contrast, Paris has a much higher price index of 117.2, with the Hauts-de-Seine at 110.3 and the Val-de-Marne at 108.6. The price difference between Paris and the Vendée reaches nearly 20% for comparable products, which can significantly affect household budgets. According to INSEE, the national inflation rate in August 2026 was 2.4% annually, with food prices rising by 1.1% and fresh products by 5.9%. Fresh vegetables and fruits, such as tomatoes and zucchini, saw a particularly steep increase of 22.3% over the year. The study underscores a clear geographical divide in France regarding shopping costs. While some regions offer more affordable prices, others, particularly in urban areas like Paris, face significantly higher expenses. This disparity could influence consumer behavior and purchasing decisions, especially in a period marked by inflation and rising living costs.