I posted about this in the wheels/tires sectino as a public service announcement to this JX community instead of the Pathfinder community, cause you JX people have been such a good source of information for me.
These are the real deal, genuine Nissan/Infiniti parts that work with the 2013+ JX, Pathfinder, and Altima. I got two sets from these guys, one for my snow tires and one for fun, because the price was $35 each compared to $117 each over the counter.
Another forum member, shiny, got a set, too. We've both had perfect success with them, as I would expect since they are OEM. His JX and my Pathfinder both sync'ed automatically with them. Put them on, drive a mile or two, and they are talking to the car. Easy!
Go get 'em before I get tempted to buy them for further market speculation.