I've purchased two of these and while I can't say for certain that the cases were new, they were certainly so free of any imperfection that I couldn't tell the difference. I keep trying to tell people these are the best deal on the refurbished store. I think you are going to be very happy.
Somehow, with something like a laptop, I don't want to save a couple hundreds bucks and always feel like I bought it used. I did just buy an iMac used (craigslist). It was a 2011 for $450. Also an extremely good deal. I bought a new wireless keyboard and trackpad for it so really the part that I touch and interact with is new.