Northwest Outdoor via eBay offers the factory-refurbished Garmin Forerunner 405 GPS Heart Rate Monitor, model no. 010-N00658-20, for $99.99 with free shipping. That's tied with our mention from February and the lowest total price we could find for a refurb today by $4. It features a GPS receiver, LCD, chest strap, heart rate-based calorie calculation, and alarm clock.
A 1-year Garmin warranty applies.