One of my friends recently purchased a D5300 bundle from someone who decided not to become a wedding photographer (yea!). What was included in the bundle looks suspiciously like an Amazon bundle that's listed as an "Import Model". What's the easiest way to determine if the d5300 is actually a grey market camera designed for another country other than the US? Secondly, since she bought it off someone else (making her the second owner) is the Nikon warranty good anyway?