World Wide Stereo via eBay offers the Sennheiser PMX90 Stereo Headphones
in Black for $19.99
with free shipping
. That's $5 less than last week's mention and the lowest total price we could find today by $30. They feature an ergonomic neckband, 3.5mm plug, 20Hz to 20kHz frequency response, and more. Deal ends September 12 at 10 am ET.