I know this is an old question, but I referred to this page recently when I purchased my 2017 Open Box MacBook Pro. So, after going through with the purchase I wanted to add my $0.02.
I WAS VERY NERVOUS about purchasing a $2,500 computer as Open Box. Whatever the Bust Buy rep said aside, I was very skeptical that I would receive a $675 mark down (Open Box price $1,825) with absolutely no defects. But you have 14-days to return the device, so I decided to try the equipment.
Now 10-weeks later, I am so amazed and happy with the product. Works like brand new. I'm updating from a 2010 MacBook and it's incredible how the Pro's work. I love this computer. I love the touch bar.
And to add an additional benefit,
I'm a teacher and $1,825 was not coming out of my pocket, so I financed at 0.0% APR for 12-months. So not only do I have an amazing computer, I also get to dance with Citi Bank and get this computer without paying a cent of interest!
I will always look at an Open Box option before I make any large purchase from Best Buy!!