Kromskops and ready-made Kromograms were bought by educational institutions for their value in teaching about color and color vision, and by individuals who were in a position to pay a substantial sum for an intriguing optical toy. A few people did, indeed, make their own Kromograms. Unfortunately for Ives, this was not enough to sustain the businesses which had been set up to exploit the system and they soon failed, but the viewers, projectors, Kromograms and several varieties of Kromskop cameras and camera attachments continued to be available through the Scientific Shop in Chicago as late as 1907.