Harman Audio offers the AKG K323 XS Ultra Small In-Ear Headphones in Green or Yellow for $13.99 with free shipping. That's tied with our July mention as the lowest total price we've seen. (It's a current in-stock low by $26.) They feature a 20Hz to 20kHz frequency response, 16 ohms impedance, 98dB sensitivity, four earbud sizes, and carrying pouch.