A new investigation reveals you’re being secretly overcharged at Dollar General and Family Dollar. The price you see on the shelf isn’t always the price you pay at checkout. Across the country, inspections and complaints show that everyday items — food, paper goods, medicine, pet supplies and more — are sometimes ringing up higher than advertised, leaving you unknowingly overcharged. The problem is widespread, and repeat violations keep turning up. Enforcement can be weak — putting the burden on