Best Buy: Apple 21.5" Certified Refurbished iMac Desktop Intel Core i5 1.4GHz 8GB Memory 500GB HDD (2014) Silver MF883LL/A
Memory in New $1099 iMac is Soldered and Not Upgradable - MacRumors
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
Apple iMac (21.5-inch, 2014) review: A price cut for the 21-inch iMac makes it a mainstream machine - CNET
iMac with Retina display review: best in class, but not everybody needs one | Engadget
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade at Amazon.com
Install memory in an iMac - Apple Support
How to Upgrade RAM on MacBook Pro, iMac & More | AVG