I've owned this for just over a year. It's been used for Music Production mainly in that time. No issues at all, runs great, really smooth snappy performance. The only reason I'm selling, is I'm moving back to Windows due to incompatibility issues with certain hardware & software I have. It comes boxed, the power supply is not original but works. fine. I'm also including a hub which I added for extra ports and which can also be used to add a second hard drive. You'll need a USB-C to USB-C cable to connect the hub to the Mac.
eBay