And of course, it depends on what you're storing. The Radio Shack ad has several things that would use storage -- a VHS camcorder, a microcassette recorder, a p

And of course, it depends on what you're storing. The Radio Shack ad has several things that would use storage -- a VHS camcorder, a microcassette recorder, a portable CD player. All of them used different storage mediums at different prices. If you want to price out the storage for the "1991 iPhone equivalent" the way the original analogy asks, "minutes of audio" and "minutes of video" is the unit, not gigabytes. The article gets away from those terms by posing a different question and pretending it's the same question.