I bought a new USB flash-drive yesterday for carrying files between home and work. 32 GB little non-mechanical gizmo, physical size less than 1/2 my pinkie finger. I thought it was tagged $9.97 on the shelf. Upon checking the receipt, $6.00.
A Winchester-type hard drive of 30 MB was a big and $$$ deal not all that many years ago.
Blows the mind to imagine what may be in 5, 10, 100 more years.