So I ordered a refurb unit (it was labelled new) but clearly a refurbished one,  the hardware was not in bad shape when it arrived by the keyboard had a shift issue (it always capitalized everything),  wasn't able to troubleshoot it and took it to the apple store for support, they looked it up and like yes this is broken in exactly the same it was when first person bought and and it needed a $500 motherboard replacement.  He suggested we return it to amazon and we agreed.Notes:1.  You can't just take refurb units into the apple store because they won't have record of you buying it, you need call apple on the phone and get them to schedule the appointment for you.2.  this is 3 stars because the return refund process within 3 months was actually smooth and had no issues.3.  These refurb units are dramatically cheaper for a reason,  so you get what you pay for (and you can return it if you miss out), but you can't wait.