Ebay offers Open-Box Heyday Open Ear Sport True Wireless Headphones for $14.44 (reg $39.99) with free shipping.

Product Description:
Enjoy on-the-go listening with the Open Ear Sport from heyday, the perfect blend of performance and safety. Designed for active lifestyles, these water-resistant, wireless headphones offer a secure, open-ear fit that lets you hear your surroundings while enjoying your music. With built-in noise canceling and a microphone for clear calls on the go, they're built to move with you, rain or shine.
heyday: Let your style speak volumes.

• Weight: .1 Pounds
• Water Resistance: Water-Resistant
• Ear Cushion Material: Silicon, ABS (Acrylonitrile Butadiene Styrene)
• Connection Type: No Wired Connection Ports
• Wireless Technology: Wireless
• Package Quantity: 1
• Noise Canceling: Noise Canceling
• Microphone: Built-In Microphone
• Battery: Required, Included