Circuit City offers the TomTom XXL 550M 5" Portable GPS Navigation System, model no. 1EP0.019.02, for $79.97 with free shipping. That's tied with our mention from two weeks ago as the lowest total price we could find by $10. Sales tax is added where applicable. This GPS features a 5" touchscreen LCD, lifetime map updates (up to four updates per year), maps of the U.S., Canada, and Mexico, text-to-speech, advanced lane guidance, and more.