MP4 Nation via Amazon offers the Brainwavz M4 In-Ear Headphones, model no. BWAVZ-M4, or the Brainwavz M4 In-Ear Headphones with Mic, model no. BWAVZ-M4-MIC, for $28 with free shipping. That's at least $62 off and tied with our July mention as the lowest total price we've seen for these earphones. Sales tax is added where applicable. They feature a 20Hz to 20kHz frequency range, 10mm drivers, three sizes of ear tips, carrying case, and more.