You get them for a lower price and guarantee is the same as a new product. It is a good idea to buy a refurbished laptop or cellphone? Or should I pay a little more for a new one?
I just found out that some places only sell this kind of items thus their low prices, but those fuckers aren't telling you that those products aren't exactly new 
Let me tell my experience about those: We try one of those in my workplace, because it seem to be cheap. Laptop came just as ordered, only little thing, it didn't start at all. We change it to another one, lot of difficulties, and it die on my hands. Third one also. After the third one, I was so pissed off, I just call the salesman and yell, and after this verbal beating, he was happy to send me brand new one. It was an older model, but it work fine and has been doing it's job five years now. Point is simple, when you buy cheap, what you get is cheap, and cheap hardly is good.