Jabra via eBay offers its refurbished Jabra Elite Sport Bluetooth Headphones with Heart Rate Monitor in Black for $79.99 with free shipping. That's tied with last month's mention as the lowest price we've seen. (It's also $70 less than the best deal we could find for a new pair now.) They feature four and a half hours of talk/music time and can be used with the JabraSportLife app (iOS and Android) to monitor pace, heart rate, and reps and provide audio coaching.

Note: A 180-day Jabra warranty applies.