I live in the Washington DC area (northern Virginia) and pay $45 per month for 25Mb/s on Cox cable, and something like $30 a year to Skype for "landline" calls

I live in the Washington DC area (northern Virginia) and pay $45 per month for 25Mb/s on Cox cable, and something like $30 a year to Skype for "landline" calls from my computer. I could add a phone line through Cox for ten or twenty bucks, bringing it closer to your package, but I'm not sure why anyone would do that when VOIP is so cheap, if they already have reasonable bandwidth.