Econintersect: Over the past thirty years the cost of computer storage has come down by 3 x 10^6. What cost $3 million in 1981 cost $1 in 2012. Or, for those who are impressed by a lot of zeroes, what cost $1 in 1981 cost $0.0000003 in 2012.
From Twitter:
Price of 1Gb of storage: 1981 $300000 1987 $50000 1990 $10000 1994 $1000 1997 $100 2000 $10 2004 $1 2012 $0.10 (via @scienceporn)
— Graham Farmelo (@grahamfarmelo) November 3, 2013