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
MacBook Pro 15" Retina (Mid 2012-Early 2013) SSD - iFixit Store
MacBook Pro 13" / 15" Retina 512GB SATA SSD Solid State Drive, Mid 2012 / Early 2013 - 661-6487 661-7010
New 2.5" SSD won't fit - my MacBook pro says it's a mid 2012 15" model - Ask Different
MacBook Pro 13" Retina Display Early 2013 SSD Replacement - iFixit Repair Guide
SSD Upgrade 128GB 250GB for A1278 A1286 A1297 2010 2011 2012 Macbook Pro 13 15" | eBay
512/500GB SSD Upgrade Macbook Pro 13 15" 2011 2012 A1278 A1286 A1297 High Sierra | eBay
Amazon.com: Odyson - 512GB SSD Upgrade Kit Replacement for MacBook Pro 15" A1398 (Mid 2012 - Early 2013) : Electronics
mSATA SSD Installation with an adapter on Macbook Pro 15 (Retina Mid 2012) - YouTube
How to install an SSD on a 15-inch Retina MacBook Pro
RAM upgrade and/or SSD drive – what's the benefit?
MacBook Pro Retina (Mid 2012): SSD Replacement - YouTube