Best Buy offers the Sony X-Series Over-the-Ear Headphones in Red/Black, model no. MDRX05/RB, for the in-cart price of $49.99 with free shipping. That's $30 under our July mention and the lowest total price we could find today by $30. They feature a 4Hz to 24kHz frequency response, 40mm drivers, and in-line microphone and remote.