Most people prefer not to buy a refurbished laptop because they know it is not new and are likely concerned about blemishes on the laptop chassis itself. Also, some feel that if it is refurbished then it must have broken before and if so, then it would be more likely to break again compared to a new laptop. Refurbished laptops usually comes short warranties, but that is not always the case.
The current laptop that I have is a refurbished Dell Latitude 3540 with an i5-4200u, 1080p screen and Radeon HD 8850m (a little more powerful than a nVidia 940m and certainly less powerful than the GTX 950m) which I bought from ebay for about $500 + shipping. It was refurbished by Dell and sold by a company / person who had sold at least 5,000 items on ebay and had at least a 98% positive rating.
I bought the laptop in mid-January 2014. Doing a bit of research I found that in early December 2013 Dell was selling refurbed Dell Latitude 3540 with the same configuration I have for $350 in their outlet store. The natural conclusion is the person bought as many as he / she could, then simply sat on them for a short period of time before listing them on ebay. That would explain why I had about 11 months left on the warranty (which is transferable on Dell laptops).
A new Dell Latitude 3540 with the same configuration would have cost around $850 - $900 on Dell's website.