Skullcandy via eBay offers the Skullcandy Hesh Stereo Headphones with Mic in six colors (Carbon Red pictured) for $24.95 with free shipping. That's the lowest total price we could find by $20, although we saw them for $5 less in January (since expired). Features include 50mm drivers, 18Hz to 20kHz frequency response, 3.5mm gold-plated plug, and more.

Of note, these headphones are new, but the packaging may have small scratches or dents.