Ebay offers Refurbished Bose SoundSport Pulse Wireless Headphones for $79.95 (reg $199.95) with free shipping.

Product Description:
Makes Your Heart Beat
The music powers your workout. And powerful technology tracks it so you can push even further, with no wires in the way. These sport headphones feature a highly accurate built-in heart rate sensor to give you the information you need to take your workout to the next level. Because, for you, it’s not just about getting exercise—it’s about getting better.Engineered To Elevate Your Workout
You put your heart into your workout. Your gear should keep pace. With a built-in heart rate sensor and a durable build, see how SoundSport Pulse earbuds take that challenge head on—so you can challenge yourself every time, in any conditions.

• SoundSport Pulse uses a hydrophobic cloth to reduce sweat and moisture during workouts. Go all out—even in the rain. There's nothing stopping you.
• A built-in heart rate sensor from PerformTek lets you view your real-time BPM with high accuracy—directly from your ear.
• The tips deliver stability for your most intense workouts. The redesigned shape stays comfortable and creates a gentle seal in your ear.