There was a time when disk drives of any kind were a luxury item for computer owners. Many early home computer owners used cassettes to store and load data. In 1984 when this particular ad came out, the price of floppy drives was starting to come down. Most still cost $200-$300 which was more expensive than it sounds in 1984. Also, $1000 (which is several thousand in today’s dollars) got you a whopping 5 MB hard drive.
This particular ad is from the January 1984 issue of Color Computer Magazine.