Amazon offers the Sony Studio Monitor Series Stereo Headphones in Black, model no. MDR-V6, for $49.99 with free shipping. That's tied with last month's mention and the lowest total price we could find by $35, although we saw them for $20 less in September. They feature a 5Hz to 30kHz frequency response, 40mm drivers, 10-foot cord, and 3.5mm connector with 1/4" adapter.