Restored Apple iMac 21.5" Thin Desktop Computer Intel Core i5 2.7GHz 8GB RAM 1TB HD Mac OS Sierra MD093LL/A with USB Keyboard and Bluetooth Mouse- (Refurbished) - Walmart.com
iMac "Core i7" 3.3 21.5" (4K, Late 2015) Specs (Retina 4K, Late 2015, BTO/CTO, iMac16,2, A1418, 2833): EveryMac.com
Refurbished 27-inch iMac 3.8GHz 8-core Intel Core i7 with Retina 5K display - Apple
Amazon.com: Apple iMac MNDY2LL/A 21.5 Inch, 3.0GHz Intel Core i5, 8GB RAM, 1TB HDD, Silver (Renewed), macOS High Sierra : Electronics