Right now, you're probably paying your cable or satellite provider around $30 a month just to watch local channels you could be getting for free over the air. It's buried in your bill, but it's there – the "retransmission" fees that local ABC, NBC, CBS, and Fox affiliates charge providers for access to programming that's technically free broadcast TV. A one-time investment of $150 to $300 in a NextGen TV receiver pays for itself in under a year, and then keeps paying you back.