For its newsletter subscribers only, EverydaySource offers this Universal 3.5mm In-Ear Stereo Headset bundled with a Leather Case for Apple iPhone 4 for $18.99. Coupon code "S0130VBKN" cuts it to $6.29 and bags free shipping. That's a buck under the lowest total price we could find for a similar bundle elsewhere. The headset features a microphone and on/off switch.