Apple A Grade Desktop Computer iMac 21.5-inch (Retina 4K) 3.4GHZ Quad Core i5 (Mid 2017) MNE02LL/A 8 GB 1 TB HDD 4096 x 2304 Display Mac OS Includes Keyboard and Mouse - Walmart.com
A-Tech 32GB (2x16GB) RAM for Apple iMac 2017 (27 inch Retina 5K & 21.5 inch Retina 4K) | DDR4 2400MHz SODIMM PC4-19200 2Rx8 1.2V 260-Pin SO-DIMM Memory Upgrade Kit at Amazon.com
Apple 21.5" Certified Refurbished iMac with Retina 4K Display Intel Core i5 3.0GHz 8GB Memory 256GB SSD (2019) Silver MHK33LL/A - Best Buy