THE PROBLEM OF PRICE STABILISATION. Memorandum by the Economic Section of the War Cabinet Secretariat. 1. Since the outbreak of the war wholesale prices have increased by 53 per cent; the Ministry of Labour Cost of Living Index, which is, however, heavily weighted with the prices of subsidized foodstuffs, has risen by 27 per cent. Percentage Increase in Prices September 1939/ February 1941. Wholesale Prices. Food & Tobacco 59% Industrial Materials Basic 71% Intermediate 56% Manufactured 35% Total 50% All Items 53% Cost of Living.