Vanns.com offers the Lowrance iWay 500c GPS Receiver
(pictured) for $299.77
. With free shipping
, that's the lowest total price we could find by $56.
It features a 5" 320x240 pixel LCD, 20GB internal hard drive with 10GB of map storage and 10GB of MP3 storage, NAVTEQ turn-by-turn map database for the continental US and Canada, and more.
Other GPS systems are available: