Groupon offers the iHip NFL Portable iDock Speaker System in 24 teams, model no. NFV5000, for $13.99 plus $2.99 for shipping. That's the lowest total price we could find by $9. The team logo is displayed on the system and remote control. It's compatible with the iPhone, iPad, and iPod. Four AA batteries are required (not included). Deal ends August 20 at 12:59 am ET.