As one of its daily deals, Musician's Friend offers the Nady Deluxe Studio Monitor Headphones, model no. QH560, for $17.99 with free shipping. (Click the banner on the right to find this item.) That's the lowest total price we could find by $9. They feature 40mm drivers, cloth-covered ear cups, self-adjusting headband, and a 20Hz to 20kHz frequency response range. Deal ends today.