Black Friday isn't over yet, here are some great deals on GPS units that are still available. Newegg.com has the Garmin nuvi 5-inch GPS navigation system with lifetime map and traffic updates, it has seen a $170 price break from $299.99 down to $129.99. Today Buy.com has slashed the price on the Garmin nuvi 1350LMT portable navigator, which is usually $249.99, but today is only $129 after the savings are applied.