VM Innovations offers the refurbished Sennheiser HD428 DJ Stereo Headphones for $39.95. Coupon code "SAVE40HD" drops them to $23.49. With free shipping, that's a buck under our June mention and $55 below the lowest total price we could find for a new unit. They feature an 18Hz to 22kHz frequency response, noise-isolation earcups, 3.5mm plug, 1/4" adapter, and more.

Note: A 90-day VM Innovations warranty applies.