The optacon was worth the money for me because I was a trained computer programmer and at that time the only way I could read and correct my programs was with the optacon. I had a job which involved going from place to place installing and correcting and modifying programs and this was in the late 1970s. With the optacon I could read the printed copy of the programs and the computer screens. Without it, I couldn't have done any of that. There were no scanners of any sort and no screen readers. So the optacon allowed me to have some very good jobs. Today such a device would only be worth the money if you were working with graphic diagrams or things for which there is no software to help interpret them. Gail