If you have broadband, this service should be free. In the end it’s just pushing more data across the copper wires, in the same way you do with your boardband connection, except for a fixed price per month.

The current broadband prices are Telephone line rental + broadband. Which adds up to around 25-30 pounds per month. The line rental is just an addtional charge for the same line service.

If you paided say 15 pounds a month for the line + broadband + calls using voip inclusive, that would be fair. Anything else is just making you pay multiple times for sending data down the same line.