I would say that its only worth the expense if you are unable to use your hands. My wife uses it, but her hands are really bad with arthritus, so she does find it useful. She has found that it takes a fair amount of "training" as well, so i suppose that it depends how much you are planning to use it to make it worthwhile. The faster spec machine you have makes a lot of difference as well. I think there is a lot of processing going on.