Amazon offers the Garmin nüvi 50LM 5" Portable GPS Navigation System with Lifetime Maps, model no. 010-00991-21, for $84.99 with free shipping. That undercuts Best Buy's Black Friday price by $5 and is the lowest total price we've seen. (Most stores charge $100 and up.) Features include a 5" 480x272 touchscreen LCD, free lifetime map updates, voice navigation, lane assist, maps of the US, microSD card slot, and USB connectivity.