Amazon.com: MCE Technologies 1TB Internal SSD Flash Upgrade for MacBook Pro Retina (Mid 2012 - Early 2013) - Includes USB 3.0 Enclosure for Original Drive & Install Kit! : Electronics
Amazon.com: MCE Technologies 500GB Internal SSD Flash Upgrade for 13" and 15" MacBook Pro with Retina Display (Mid 2012 - Early 2013) - Includes Installation Kit! : Electronics
MacBook Pro 13" / 15" Retina 512GB SATA SSD Solid State Drive, Mid 2012 / Early 2013 - 661-6487 661-7010
MacBook Pro (Retina, 15-inch, Mid 2012) SSD Upgrade - A Leslie Wong Blog
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
How to Upgrade the PCIe SSD in a 15-inch MacBook Pro w/ Retina display (Late 2013 - Mid 2015) on Vimeo
OWC SSD Kits For MacBook Pro Retina Display 2012 - 2013
Macbook Pro SSD Upgrade (2011/2012/2013) - YouTube
The next-gen MacBook Pro with Retina Display: SSD Analysis
My maxed out Mid-2012 13 inch MBP - 16GB of ram and 1.2TB of SSD! : r/mac
How to Upgrade MacBook Pro Hard Drive (Unibody, 2009-2012): EveryMac.com