Brand New Black iPhone 6S Plus - Discounted $600

I got an iPhone 6S Plus 64GB as a gift but I decided to stick to my older version (6 Plus). Apple wouldn't return it because it's been over 14 days, so I'll have to sell it at a discounted.

Color: Space Gray( i.e. Black)

Brand new in box, never opened, still wrapped.

Price: $600 Non-Negotiable