As one of its daily deals, Musician's Friend offers the AKG M 80 MkII Semi-Open Studio Headphones, model no. 6000H51090, for $29.99 with free shipping. That's tied with our July mention and the lowest total price we could find by $20. These headphones feature a self-adjusting headband, single-sided cable, and leatherette ear pads. Deal ends today.