For years I have been listening to @DaveHamilton espouse the greatness of the refurb store for Mac purchases. I recently acquired a 2018 MacBook Air from the refurb store and I am amazed!!I honestly cannot see any signs of prior use. Savings from refurb store basically paid for AppleCare+
Daughter is looking forward to me turning the computer over to her....once I am done setting it up/playing with it 🙂
I have a 2007 Mac mini that I got from the Refurb Store. It has been running 24/7 (except during winter power outages and that 1 house move) since I got it. While it is still running, it is at end-of-life, and well be retried soon.
I have acquired several Macs via the Refurb Store and if anything they are better than new, because the Refurb process has them undergoing extra checks before being repackaged and shipped to you.