TigerDirect offers the factory-refurbished TomTom VIA 1405-M 4.3" Portable GPS Navigation System
, model no. 1EN4.019.01, for $64.96
plus about $4
for shipping. That's $4 less than our July mention and $21 under the lowest total price we could find for a new one, outside of the mention below. Features include a 4.3" touchscreen LCD, free lifetime map updates, preloaded maps of the U.S., Canada, and Mexico, and advanced lane guidance. A TomTom warranty applies, but the length of the warranty is unclear.
A close price: smaycha via eBay charges $69.99 with free shipping.