heraldm Garmin list Price Retail Garmin Street Pilot C340 $455.00 $599.99 Garmin Street Pilot C550 $469.00 $849.99 TomTom Go 510 $485.00 $599.99 TomTom Go 910 $565.00 $799.99 Magellan RoadMate 3050T $480.00 $749.99 NAVMAN iCN 330 $300.00 $599.99