Restored 2011 Apple MacBook Pro 15.4" Core i7 2.2GHz 4GB RAM 500GB HDD MD318LL/A (Refurbished) - Walmart.com
Macbook Pro RAM 4GB (2 x 2GB) 2009 2010 2011 2012 A1278 A1286 13 15" DDR3 10600s | eBay
16GB 1333 MHz DDR3 Memory for 2011 MacBook Pro and iMac
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro( Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
NEMIX RAM 8GB (2X4GB) DDR3 1333 PC3-10600 SODIMM Memory for Apple MacBook Pro 2011 System Specific Memory - Newegg.com
hardware - Would this memory work on a MacBook Pro (17-inch, Early 2011)? - Ask Different
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com