Amazon offers its Prime members the MEElectronics M9 Hi-Fi Sound-Isolating Headphones in Silver, model no. M9P-SL, for $8.32 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise it adds $5.74.) That's a buck under our March mention and $8 under the lowest total price we could find for these headphones in any color elsewhere. They feature a 20Hz to 20kHz frequency response, 3.5mm plug, and 4-foot cord.