The document discusses data storage devices and their capacities and costs. It notes that a kilobyte is 1000 bytes, a megabyte is 1000 kilobytes, and a gigabyte is 1000 megabytes. A floppy disk holds 1.44 megabytes and costs $0.49, while a DVD can hold over 700 pages of text or 2.4 million pages. USB flash drives range in size from 16 megabytes to 16 gigabytes and are cheaper than floppy disks. Blu-ray discs hold 25 gigabytes while HD-DVDs hold 15 gigabytes.