This deal has ended.
Amazon currently has great deals on tons of Magellan GPS Navigation devices. One of the best deals is on one of the better GPS devices to buy, the Magellan Roadmate 700: it has a color display, full built-in mapping of US and Canada and voice-prompted directions (surprisingly, not all GPS have both of the latter two). Though the 700 sells for as much as $700 in stores, Amazon has a new 700 for $320 and a refurbished 700 for $280 (I previously mentioned this at $390!). Shipping is free and there is no sales tax (except KS, ND, WA).