How much do things cost in London and Galway? Galway London Bottle of local beer (0.5 litre)£1.86£1.62 3 course meal for 2£47.49£50.00 Petrol (1 litre)£1.27£1.39 Large bottle of water£1.32£1.00 Imported beer (0.33 litre)£3.32£3.50 Last updated on 24/07/2014 source