1.1 GHz Apple MacBook (Early 2015) review | Macworld
Apple MacBook 12 inch Laptop - MK4N2LL/A (2015) for sale online | eBay
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
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
Discontinued 12-inch MacBook gone without a true upgrade - 9to5Mac