I bought a 1TB micro SD card today for $200. It's astonishingly cheap.
It doesn't seem like more than two or three years since 1TB SSD's dropped under $500. But those you couldn't lose in among the pocket lint.
I don't remember when 1TB 3.5" spinning drives dropped under $100. Five or six years ago?
I do remember when 1GB drives became affordable, just not the date.
In about 1990, I bought a 200MB drive with 3.5 inch platters. It cost $800.
And in 1979 or 1980, I bought a Corvus 10MB drive that was the size of a suitcase and sounded like a jet engine when it started up. It cost $5,000.
So that 10MB x100 would be a GB, or times 100,000 would be a TB, the same storage as the tiny little micro SD card I bought today.
The card is 100,000 times the storage of the Corvus drive, 1/25th the price, so small it would be hard to measure and so easy to lose.
Boy do I feel old! I'm going to go take a nap.