Yes, all of us know that. However, it isn't sold that way. I've explained this before. The difference between a discount and a charge is in what is disclosed. If the CSR quotes the price of, let's say, $39.99. The customer says: "Is that my total monthly cost?" CSR says "Yes". No mention of the phone line, no mention that the $39.99 quoted is assuming the phone line is connected. The system in installed, the tech doesn't mention the phone line. Customer gets his first bill, and it's $44.99. The customer calls up wanting to know why his bill is $49.99 instead of $39.99, and he is told that it's because the receiver isn't connected to a phone line. At that point, it constitutes a CHARGE, not a discount, because the customer was quoted the "discounted" price, and not told that the price was only good if he connected it to a phone line.