Surprisingly when I opened up the bottom cover my NUC had been fitted with 16GB of RAM and a 512GB M.2 SATA hard drive. I purchased the NUC 5 Pro series as a bare bones PC. Normally this means I would need to add Storage and memory (RAM). The options for storage M.2 SATA (B key) socket and a standard SATA socket and space for 2.5" SSD.  I messaged the company because I felt it was the right thing to do and offered to exchange it for what I had payed for. They emailed me back and thanked me for letting them know but told me I could keep it. So I purchased a used barebones NUC 5 Pro for $175 and ended up getting a well built complete system. The new price without the RAM and storage is $499. You add in the price of buying the RAM and memory which that's another $130. So yes I am very happy.  The product it's self  didn't look used it came with the peel off plastic protection on top and the front buttons. There where no scratches or marks of any kind and the it operates well. The only thing I would like to see included is a mini DisplayPort cable or adapter. That is the only outputs. I ended up purchasing  a mini DisplayPort to HDMI adapter from the local Best Buy  for about $9 just so I could get it up and running and test it. Otherwise I have no complaints. Of course I thrilled that I got more than I ordered but the product itself is like new and does what it's supposed to do. It cam with the power cord and metal mounting bracket, as well as all the original paperwork that would come in a new boxed item. Then when I contacted the sellers they were quick to respond and seemed very kind. What more could someone ask for. I would have written the same kind of review if I had gotten just the product as I had ordered it because of it's quality.