Amazon offers the Optoma 1080p DLP Home Theater Projector, model no. HD20, for $659.07 with free shipping. That's the lowest total price we could find by $160. This DLP projector features a display size of up to 300", native resolution of 1920x1080 (1080p), 4,000:1 contrast ratio, 1,700 lumens brightness, two HDMI inputs, and VGA and other video inputs.