I had one of those drives in college in the early '80s. It cost considerably less than that from the salvage store. We got it as part of a project to make our homebrew S-100 bus computer speak like the sexy computer in the "Dark Star" movie. 10 meg was an insane amount of memory, but it turned out to be too slow for what we were trying to do, so we had to build an extended chassis to fill with RAM boards we designed. By the time we got done, we had a big box sitting in the living room with lights worthy of the original Star Trek's computers and some halting digitized speech from recordings we made of one of our girlfriends' voice.