How much do things cost in Patna and London? London Patna A dozen eggs£2.31£0.53 Bottle of local beer (0.5 litre)£1.65£0.91 Loaf of white bread£1.06£0.24 Large bottle of water£0.84£0.27 Imported beer (0.33 litre)£4.00£1.05 source