OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
13" Apple MacBook Pro Retina 3.1GHz Dual Core i7 16GB Memory / 1TB SSD (Turbo Boost to 3.4GHz) - Used - Walmart.com
MacBook Pro Memory Model 3.1 to 4.1 | DDR2-667MHz | MacMemory.com
If You Absolutely Have to Buy an M1 Mac, Buy the Mac Mini | iFixit News
Refurbished 13.3-inch MacBook Air Apple M1 Chip with 8‑Core CPU and 7‑Core GPU - Silver - Apple
Apple MacBook Pro Laptop Core i7 3.1GHz 8GB RAM 256GB SSD 13" MF843LL/A - Good | eBay
Amazon.com: Apple MacBook Pro with Retina, Touch Bar, Intel Core i5 Dual Core 3.1GHz, (13-inches, 16GB RAM, 256GB SSD) - Space Gray (Renewed) : Electronics