I bought a $7 flash drive recently that holds 8GB. It's tiny. Curious, I did some calculations. If my arithmetic is correct, that 8GB is equivalent to almost 6000 3.5 inch floppy drives, which would fill a cube 5ft on a side. So by dollar per GB it's about 1000 times cheaper. 3.5 inch disk sales peaked in 2002 at 14 million. So only ten years later, and we have 8GB flash drives.