I was quite worried about buying a $1K used computer from Amazon, but I read the reviews and held my breath ahead and just did it.  I love this MacBook.  I had a 2009 MacB that was beginning to show signs of age, so I really needed a newer computer.  My grandson convinced me that the 2015 was just what I wanted due to the better keyboard and the built-in USB port.It arrived on time and in very good condition.  The screen is great; it's very fast (comparatively), and there was very little sign of wear and tear on the exterior.  I haven't had it long enough to comment on its durability, but I'm expecting good things there too.  The only bad taste about his experience is that the day after I put this in my shopping cart, right before I bought it, the price went up $80 and I almost cancelled the purchase.  I'm still a little annoyed about that, but all in all, I'm happy with my decision to buy anyhow.