Best Buy offers the Magellan RoadMate 1470 4.7" Portable GPS Navigation System for $149.99 with free shipping. That's $12 under our September mention and the lowest total price we've seen. Sales tax is added where applicable. Features include a 4.7" touchscreen, text-to-speech, preloaded maps of the United States, Canada, and Puerto Rico, and more. Traffic updates are an optional upgrade.