Best Buy offers the Jaybird X2 Sport Bluetooth Headphones in Alpha, Midnight, or Storm for $79.99 with free shipping. (Amazon charges the same.) That's tied with our expired mention from yesterday and the lowest total price we could find by $45. Designed for running, these sweat-proof headphones feature up to eight hours of playback per charge and include three pairs of silicone tips, three pairs of Comply foam tips, three pairs of fins, and a silicon carry case.