BuyDig offers the factory-refurbished Garmin Forerunner 405 GPS Heart Rate Monitor
, model no. 010-N00658-10, for $39.99
with free shipping
. That's the lowest total price we could find by $60. (We mentioned it last week for the same price with a portable power bank, since expired.) It features a GPS receiver, LCD, heart rate-based calorie calculation, and alarm clock. A 1-year Garmin warranty applies.