$100 Int'l. Phone Call in 1973 Now Costs Only $1.60
ECONOMIST--The cost of a phone call abroad has dropped dramatically in the past three decades, thanks to market liberalization and advances in technology. A one-minute fixed-line call from America has fallen by 98.4% in real terms since 1973 (see chart above).
In other words, an international phone call that cost $100 in 1973 now costs only $1.60 (adjusted for inflation), and a call that cost $10 now costs only 16 cents.