Epson offers its refurbished Epson PowerLite Home Cinema 2045 1080p 3D 3LCD Projector for $519 with free shipping. That's $31 under the lowest price we could find for a refurb unit. It features a 1920x1080 (1080p) maximum resolution, 3D playback, 2,200 lumens brightness, USB, and two HDMI inputs.

Note: A 2-year Epson warranty is included.