Surprise! iFixit says you can't do much to fix or upgrade the 2015 MacBook | Ars Technica
12-inch MacBook review - The Verge
Review: Apple's 2016 12" MacBook is a welcome improvement, but won't change any minds | AppleInsider
Restored Apple Macbook Pro, 13.3-inch Laptop (Retina), 2.7Ghz Dual Core i5 (Early 2015) MF839LL/A 256 GB SSD, 8 GB Memory, 2560x1600 Display, Mac OS X v10.12, Sierra Power Adapter (Refurbished) - Walmart.com
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
Some photos of my thermal mod of a 2015 retina MacBook | MacRumors Forums
Review: Can you actually use the new 12-inch MacBook for work? - 9to5Mac
MacBook Pro with Retina display review (13-inch, 2015) | Engadget
MacBook 12" (2015) - QWERTY - English Retina - Core M - 1.3 GHz - SSD 512 GB - RAM 8GB | Back Market
Apple MacBook Pro (Retina, 13-inch, Early 2015) Silver, 8GB RAM, 256GB SSD MacOS Monterey (12) Used (Grade B) - One Bite Technology - St. Albert
New 2015 13-inch Retina MacBook Pro review | Macworld
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
Amazon.com: Apple Macbook Retina Display 12 Inch Core M-5Y31 1.1GHz 8GB RAM 256GB SSD (Renewed) : Electronics
Restored Apple Macbook Pro 13.3-inch (Retina) 2.7Ghz Dual Core i5 (Early 2015) MF839LL/A 128GB SSD 8 GB Memory 2560x1600 Display Mac OS X v10.12 Sierra Power Adapter Included (Refurbished) - Walmart.com