Amazon has Garmin Edge 705 Bicycle GPS Navigator that Includes Heart Rate Monitor and Speed/Cadence Sensor (Factory Refurbished) for $379.70 + free shipping.
Technical Details
* Refurbished
* GPS-enabled cycle computer
* Sunlight-readable color display
* Features a high-sensitivity receiver that holds a signal under trees and near tall buildings
* Automatically measures speed, distance, time, calories burned, altitude, etc.
Garmin Edge 705 Bicycle GPS Navigator that Includes Heart Rate Monitor $379.70 FS 
