Daniel Hobbs, 11 year-old was born with congenital absence of his lower left arm for which his parents approached to prosthetics but were upset with prices and constant fitting changes. However, 3DSystems and Intel designed them $400 3d Printed Prosthetic Hand which weighs less than 2 pounds and comes in 16 movable pieces.

Source: http://futurism.com/11-year-old-gets-affordable-3d-printed-prosthetic-hand/