As one of its daily deals, A4C offers HTC Flat Cable Earphones with Mic in Black/Red, model no. 39H00014-00M, for $4.95 with free shipping. That's a buck under our mention from last week and tied as the lowest total price we've seen. (It's also a current price low by $1.) They feature a multi-function button with a built-in microphone. Deal ends today.