https://appleinsider.com/inside/13-inch-macbook-pro/tips/how-to-refurbish-a-2012-13-inch-macbook-pro
..In this refurbishment tutorial, we’ll look at how to refurbish a 2012 MacBook Pro 13-inch. The model we’ll be looking at is the MacBook Pro Core i7 2.9 GHz Mid-2012 model with Apple identifiers of MD102LL/A – MacBookPro9,2 – A1278 – 2554…
There are a number of these models used on eBay for around $300 today. Although they can’t do everything modern Macs can, they can still be useful considering the low cost.
Essentially the same process and steps apply to the 15-inch non-Retina 2012 MacBook Pro as well, although they may vary slightly.
These models are limited to running macOS 10.15 Catalina maximum and can be upgraded to 16GB of RAM. Older RAM is cheap now and you can get a 16GB upgrade on Amazon for around $17.
You’ll also need a new 2.5-inch SATA SSD drive to replace the existing hard drive. 1TB SSDs are cheap currently – ranging between $35 and $60 dollars on most online retailers…