newegg offers the MEElectronics M9 Hi-Fi Sound-Isolating Headphones in Black, model no. M9-BK, for $11.99. With free shipping, that's tied with our July mention and the lowest total price we could find by $13, (outside of the mention below). These headphones feature a 20Hz to 20kHz frequency response, 3.5mm plug, and 4-foot cord. Deal ends August 25.

Of note, Amazon offers it for the same price with free shipping via Amazon Prime.