Lenovo offers its Lenovo M0520 Multimedia Stereo USB 2.0 Speakers in Black, model no. 57Y6360, for $29.99. Coupon code "USP1JL436360" cuts it to $8.99. With free shipping, that's tied with our mention from three weeks ago and the lowest total price we could find by $8. This USB-powered speaker system features a 90Hz to 20kHz frequency response and 3.5mm audio jack. Deal ends July 25.