L.A. Computer Company offers the refurbished Apple iMac Intel Broadwell Core i5 3.1GHz 21.5" All-in-One Desktop with Retina 4K Display for $949 with free shipping. That's the lowest price we could find for a refurb by $251. This late-2015 model features:
  • Intel Core i5-5675R 3.1GHz Broadwell quad-core processor
  • 21.5" 4096x2304 Retina 4K display
  • 8GB RAM & 1TB hard drive
  • macOS 10.13.6 (High Sierra)
Note: A 90-day warranty applies, although it's unclear who covers it.