Yeah, they’re amazing value. I paid $125 CAD for a 4th gen i7 with 16GB of RAM about 5 years ago. It’s been running almost 24/7 ever since with no issues.

You also don't have to deal with the usual annoyance of second hand gear like facebook marketplace and no delivery. These companies / governments have contracts with reseller companies who will buy the entire stock and sell them online just like buying new.