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 a $20 drop and tied with our March mention as the lowest total price we've seen for these earphones. They feature a 20Hz to 20kHz frequency range, 10mm drivers, three sizes of ear tips, carrying case, and more.