The average price of a 1L bottle of mineral water reaches ¥156, while the average distribution price for 1.6 millimetre cold-rolled steel sheets amounts to ¥1442,500 per tonne, which is ¥141.5 per kilogramme, ¥15 cheaper than 1kg of water.

Credits: Getty Images; Author: Paul J. Richards;

According to Nikkei POS, which collects sales information from supermarkets and other stores nationwide, this represents an increase of up to 5 percent year-on-year in March alone.