Here's a great Black Friday offer for those who have fallen in love with the BlackBerry Passport. The Canadian firm's enterprise-centric flagship handset, is being slashed in price by 29% through November 30th. That means that the phone is being cut in price by $200, and costs $499. Keep in mind that the device is not supported on Verizon, Sprint or U.S. Cellular. Fittingly, the Black Friday deal