As one of its daily deals, B&H Photo Video offers the InFocus 4,000-Lumen 1080p 3D DLP Projector for $419.95 with free shipping. That's the lowest price we could find by $280. Deal ends today. It features:
1920x1080 (1080p) native resolution
HDMI & USB
Blu-ray 3D capable
15,000:1 contrast ratio
4,000 lumens brightness
You very likely are putting your laptop battery into an early grave.