Bob & Ron’s Worldwide Stereo offers the Sennheiser HD-280 Professional Headphones for $99.95. Coupon code “SD7009” chops it to $69.99. With free shipping, that’s tied with last fall’s mention as the lowest total price we could find, this time by $17. (Most merchants charge at least $100). They’re intended for professional monitoring applications and feature up to 32dB ambient sound attenuation.