I just sold an old C2D machine on Facebook marketplace for $80.
This one had been given to my son to play games on, and then we did a few upgrades: a 256gb SSD I had laying around, a $15 half-height R5 340X GPU off ebay, and a $5 E8500 CPU upgrade (replacing a Pentium Dual Core E5200.)
I gave it a clean install of Windows 10, and someone bought it for his mom to browse facebook on.
Sure, without those upgrades, it probably wouldn't have fetched as much, but the SSD made the most significant difference, and you can get those for $15 these days.
This one had been given to my son to play games on, and then we did a few upgrades: a 256gb SSD I had laying around, a $15 half-height R5 340X GPU off ebay, and a $5 E8500 CPU upgrade (replacing a Pentium Dual Core E5200.)
I gave it a clean install of Windows 10, and someone bought it for his mom to browse facebook on.
Sure, without those upgrades, it probably wouldn't have fetched as much, but the SSD made the most significant difference, and you can get those for $15 these days.