Sound Professionals offers the Audio-Technica Professional Studio Headphones in Black, model no. ATH-M50s, for $149.99. (Choose brand new with stock cable and no extra earpads in the dropdowns.) Coupon code "1-ATH-M50s-50" cuts it to $99.99. With free shipping for shipping (choose "standard shipping" at checkout), that's tied with last month's mention as the lowest total price we've seen. (It's also a current price low by $45.) These collapsible headphones feature a 15Hz to 28kHz frequency range, 45mm neodymium drivers, swivel earcups, a padded headband, and coiled cord.