In the computer industry, there are many laptop models that are known to have a higher failure rate, and subsequently the manufacturers make the parts for those particular models prohibitively expensive.
Motherboards You can switch to another model or newer generation motherboard and often upgrade to superior specifications while spending less money.
Displays You can switch from touchscreen to non-touchscreen to save a significant amount on display replacement. Some models just need a different display panel while others also need a new display cable and lid assembly.
nVMe Solid State Drives Many models do not list whether or not they can support nVMe Drives or have provided inaccurate support information.
Apple
MacBookPro
13″
A1278
2010*
Apple
MacBookPro
13″
A1278
2011*
Apple
MacBookPro
13″
A1278
2012
* = Thunderbolt port must be adjusted with for newer board on older models. Note: The Battery for A1278 is the interchangeable from 2009-2012