The document compares the prices of 11 common food items sold by 4 Romanian supermarkets (Penny, XXL, Mega Image, and Lidl) in September 2016. It finds that Penny and XXL had the lowest total cost (RON 56.61) for a standard basket of items. For many products like water, flour, sunflower oil, sugar, rice, and milk, Penny and XXL had the same lowest prices. However, Lidl did not carry some items like sunflower oil, sugar, rice, eggs, and chicken breast that month. The document aims to inform consumers about the most affordable supermarket options.