Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
MacBook Pro 13" and 15" Retina (Late 2013-Mid 2014) SSD (256gb) - Smartphone Repair Association
Amazon.com: OWC 1.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), and Mac Mini (Late 2014) : Electronics
How to Upgrade the SSD on a MacBook Pro Retina Early/Mid/Late 2013/2014/2015 - Replacement Tutorial - YouTube
How to install an SSD on a 15-inch Retina MacBook Pro
MacBook Pro 13" Retina 256GB Blade SSD Solid State Drive, Late 2013 / Mid 2014 - 661-8136 661-8138
Apple Macbook Pro Retina 15 128GB SSD Hard Drive for A1398 Late 2013 2014 2015 | eBay
Amazon.com: Odyson - 128GB SSD Replacement for MacBook Pro 13" Retina A1502, 15" A1398 (Late 2013, Mid 2014) : Electronics
Samsung ssd m.2 to Macbook pro mid 2014 | MacRumors Forums