A company I worked for made good money selling RAM as an accessory. We bought 1MB boards for DEC LSI-11 Q-Bus computers for $5,000 and sold them for $10,000. Very popular item.
I was assigned over seas long ago. I had a 10MB HD with a built in 8-inch floppy disk drive for development. It broke and I had to carry it back to the airport to fly it back to the US for repair. It weighed like 80 pounds and my hands were sore from carrying it. When I tell my kids this story they say "Dad, you are such a liar. There is no such thing as a 10MB HD."
I was in an Apple store recently and the fellow working there referred to the HD as a Winchester drive. I laughed and said I hadn't heard that term in ages.