BobDiaz
The Professor
You guys are way too young. Try working in an Apple reseller back in 1984. We sold the Apple ProFile hard disk for $1,995. Its capacity? Five megabytes. Yes, megabytes, not gigabytes. Five megabytes. And it was huge. Look at it on top of the Apple Lisa in this Wiki link...
*of course, by 1984 the price had dropped substantially. When initially introduced in 1981 it was $3499, which works out to $500 per megabyte!
Back in 1978, when I worked at TRW, we were buying 1.2MB Removable Hard Drive Platters for $100 each for our PDP 11 system. The tapes to back up the drives were only $6 each however.
Bob Diaz