Groupon offers the factory-refurbished Garmin nuvi 42LM 4.3" GPS Navigation system w/ Lifetime Maps for $64.99 with free shipping. That's tied with last week's mention and $6 under the lowest total price we could find for a new unit elsewhere. It features a 4.3" touchscreen LCD display, lifetime maps updates, voice navigation, lane assist, rechargeable lithium-ion battery, microSD card slot, and USB. A 1-year Garmin warranty applies. Deal ends October 31.