You can do better than that. A Comcast line is just a VoIP line. Ooma will get you the exact same thing for around $5/month in taxes and fees. Personally, we use Google Voice with an Obihai box for our landline and it's completely free, though we do pay 80 cents/month to another VoIP provider for E911 service, since that isn't included in Google Voice. If you are paying more than 10/month for a home phone line, then you are doing something wrong.