Bought a new hard drive for backups today, a 2-terabyte Seagate that cost me $99.95 at Office Depot. That’s 2,000,000,000,000 bytes, roughly. As I’ve mentioned before, my first Mac hard drive was 30 megabytes; it cost $300. The comparison there is pretty easy: The drive from 1989 was one cent per thousand bytes (300 / 30,000,000 * 1,000). The price of my storage this afternoon? 0.000005¢ per thousand bytes (100 / 2,000,000,000,000 * 1,000) or 200,000 times cheaper than it was twenty-two years ago.