Groupon offers the iHip NFL DJ Headphones with Mic for over 25 teams (Dallas Cowboys pictured) for $19 plus $5 for shipping. That's among the lowest total prices we could find for any single team, and the lowest total price we could find for such a wide selection of teams. These headphones feature a removable cord, in-line microphone, and volume control. Deal ends September 27 at 1 am ET.