This Spark Nano 3.0 GPS Tracker drops from $169.99 to 149.95 at Brickhouse Security when you use our exclusive coupon code BDD313 at checkout. Shipping is $4.95. This is the lowest price we found by $40. This real-time tracking device gives you up-to-the-minute GPS updates on the location of the whatever you place this device in, such as a car or boat. It works up to 3 weeks of tracking on a single charge. There is no sales tax (except in NY and IN).