What was the cost of a tank in World War I?

about 10 cents. The previous answer is not even worth that much, but the cost of a World War 1 tank was much more. As with the cost of a World War 2 tank or anything else in the past, an exact figure would be misleading because the value of money has decreased over the decades. What might seem a bargain in 1917-18 would be a small fortune today.