Lenovo offers its Lenovo M020 Multimedia Stereo USB 2.0 Speakers in Black, model no. 57Y6360, for $29.99. Coupon code “USPC11MY46360″ drops them to $12.39. With free shipping, that’s a buck under last week’s mention of a set in red and the lowest total price we could find. Sales tax is added where applicable. This USB-powered round speaker system features a 90Hz to 20kHz frequency response, 3.5mm audio jack, and more. Coupon expires May 23.