Dell Small Business offers its Dell S718QL Advanced 4K Ultra-Short Throw Lamp-Free Laser DLP Projector for $3,999.99 with free shipping. That's $250 under our mention from last April (assuming the use of a $500 Dell gift card), a low today by $821, and the best deal we've seen.

This DLP projector has won multiple awards and was a CES 2018 Innovation Awards honoree. It projects a 100" image from just 4" away, or a 130" image from less than 9" away. Additional features include:
  • 3840x2160 (4K) native resolution
  • 5,000-lumen output
  • dual 6W speakers
  • Bluetooth 4.2
  • three HDMI inputs