Meritline offers the Spyker Stereo Headphones with Microphone, model no. CL-AUD63019, for $10.99. Coupon code "MLC7H5NL1" cuts it to $7.99. With free shipping, that's the lowest total price we could find by $4. It features a detachable microphone, 20Hz to 20kHz frequency response, and more. Coupon expires after 100 uses.