Amazon offers the Onkyo 5.1-Channel Home Theater System, model no. HT-S3700, for $299.99 with free shipping. That's the lowest total in-stock price we could find by $95. The system features a maximum output of 110-watts per channel, 3D and 4K pass-through, Bluetooth 2.1, an 8" subwoofer, six HDMI inputs, and one HDMI output.