J&R, via Amazon continues to have the Audio Source NDHD1AS Noise Cancelling Earphones for $9.99 + free shipping = $9.99 shipped! They have a 20-20kHz frequency response, active noise cancellation, airplane adapter and battery.
Note: “DO NOT BUY! THE WORST HEADPHONE EVER. SOUND QUALITY IS SO POOR, I JUST THROW IT OUT. NOT WORTH RETURNING!”
So buy at your own risk.