I purchase a phone/cable/internet bundle from my provider and the price has held steady for the six years I've had it. In fact, the only increases have been when we've added services, like more HD channels, on-demand, etc.

Of course, the fact that they have a virtual monopoly on the cable TV business in my town probably has a lot to do with their pricing stability. The only competition they have is a satellite provider, and calling them "competition" is being a bit generous.