Border effects in the variability of rice price in the Indian subcontinent: Results from a natural experiment

► Presence of national border adds excess variations in cross-border city prices. ► A “before and after a border framework” is used. ► Partition of British India in 1947 adds large variation in cross-border city prices. ► New border in 1971 adds smaller variation in cross-border city prices. ► Excess price variation may not be the result of the presence of a national border.