Ending today, Groupon offers the Munitio Nines 9mm Bullet Earbuds in Gold, Silver, or Black for $32.99. Coupon code "EXTRA15" cuts the price to $28.04. With free shipping, that's $10 under our mention from a month ago and the lowest total price we could find by $17. Features include an Apple-certified 3-button control, 1-button control for Android, 20Hz to 20kHz frequency response, and 16-ohm impedance.