The new project "handiii", developed by a team called "exiii", is a myoelectric hand prosthesis which is advertised to be dramatically accessible for people in need. This is a crowd funding project [Japanese link].
Though conventional hands cost more than 10,000 USD, the material costs of handiii are kept within 300 USD by using 3D-printer/smartphone and minimizing the number of motors. Moreover, handiii will extend options for the users. With the aid of 3D-printer, users will be able to choose from various designs based on user's preference or occasion just like shoes and watches nowadays [link].