Yeah, that's an old ad (early 1980s?)! Back in 1985 (I think), I bought a 20-Megabyte HD for $400. My boss was pissed off at me, yelling that he paid $500 for his 5-Megabyte HD not long before my purchase. These HDs were huge compared to the floppies we were using. The 5-1/4 floppies went from about 80KB in half a decade later to 1.4MB, puny compared to a HD at 20MB. I think a 100MB HD was about $1000 at the time. I still have a couple 5MB HDs (1982) sitting in my vintage collection, they have a large footprint.
And now a 5TB chip???? WOW.