Panasonic offers the Panasonic Shockwave Sport Clip Headphones in Orange (pictured) or Green, model no. RP-HS33-D, for $9.99 with free shipping. That's the lowest total price we could find by a buck. They feature sweat-resistant earbuds and an elastomer hinge.
Amazon offers its Prime members the Panasonic DJ Street Model Headphones in White, model no. RPDJS400W, for $19.95 with free shipping. (Non-members can pad their orders over $35 to bag free shipping; otherwise it adds $5.74.) That's $5 under our summer mention and the lowest total price we could find today, also by $5. These feature a 10Hz to 27kHz frequency response, 40mm neodymium drivers, and padded headband.
Of note, Amazon charges only $2 more for the six other colors.