27 inch iMac with Retina 5k Display 2019 3.7GHz i5 2TB SSD 16GB RAM | Refurbished | Techable
APPLE IMAC A1311 CORE 2 DUO 3.06GHZ 4GB RAM 500GB HDD OS 10.13.6 21" [A23] | eBay
A-Tech 4GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Apple iMac 21.5 Inch 4K 3.0 GHz i5 1TB Fusion 32GB RAM 560X 4GB GFX 20 – Quality Macs
Apple iMac 20" | All In One Computer | Intel Dual Core Processor | 4GB RAM | 320GB HDD | WIFI | Mac OSX
Best Buy: Apple® 21.5" iMac® 4GB Memory 500GB Hard Drive MC309LL/A