Grey market is not black market though. They aren't counterfeit, knockoffs, or potentially dangerous. They are legitimate products made by the manufacturer. They are very upfront that they sell grey market items.
We also sell some products we've obtained from sources other than the manufacturer or its licensed importer. These are "grey market" products. "Grey market" is not illegal, not factory seconds, not demo merchandise, not cheaper or inferior products. In fact in almost every instance a "grey market" product is absolutely identical to its US-warranted counterpart. "Grey market" and US-warranted products are manufactured in the same factories from the same components, and sub-assemblies, to the same specs and tolerances, by the same workers. In terms of the item itself (excepting PAL video -- see below) there is no difference at all. A "grey market" Nikon 50mm f/1.4 D-AF lens (for example) is exactly the same in every possible way as the US-warranted version.
https://www.bhphotovideo.com/find/HelpCenter/USGrey.jsp
We also sell some products we've obtained from sources other than the manufacturer or its licensed importer. These are "grey market" products. "Grey market" is not illegal, not factory seconds, not demo merchandise, not cheaper or inferior products. In fact in almost every instance a "grey market" product is absolutely identical to its US-warranted counterpart. "Grey market" and US-warranted products are manufactured in the same factories from the same components, and sub-assemblies, to the same specs and tolerances, by the same workers. In terms of the item itself (excepting PAL video -- see below) there is no difference at all. A "grey market" Nikon 50mm f/1.4 D-AF lens (for example) is exactly the same in every possible way as the US-warranted version.