Monoprice offers its Monoprice Enhanced Bass Hi-Fi Noise-Isolating Earphones in Silver, model no. 8320, for $6.20 with free shipping. (They're also available in Pink, model no. 9960, for 30 cents less.) That's tied with last month's mention as the lowest total price we've seen for these headphones this year. (They're a current low by $6.) They feature a 20Hz to 20kHz frequency response, 14.2mm drivers, and a 48" cord.