Excerpt: It will cost between $70 and $100 but it is worth every penny. Not only is it a dual hand set system, it has an intercom and you can add on up to a total of 10 hand sets. You can have one in every room, even the bathroom. And the voice clarity, which is very important to me, is the best of all the phones I have every had, and that is a lot of phones. And my old phone had a memory of 10 numbers. This one has 100, a big bonus for the business person for sure.