Losmee via eBay offers these Andoer Foldable Bluetooth Wireless Headphones in four colors (Black/Red pictured) for $12.99 with free shipping. That's tied with our November mention and the lowest total price we could find today by $5, outside of other eBay sellers. They feature Bluetooth 3.0, up to a 10-hour music play time per charge, and auxiliary 3.5mm cord. They're compatible with iOS or Android devices.