Best Buy via eBay offers the TomTom Go 50 S 5" Portable GPS Navigation System
, model no. 1FC501900, for an in-cart price of $109.99
with free shipping
. That's the lowest total price we could find by $21. It features a 5" touchscreen LCD, free lifetime map updates, preloaded maps of the U.S., Canada, Puerto Rico and Mexico, and a microSD media card slot.