Lenovo offers its Lenovo M0520 Multimedia Stereo USB 2.0 Speakers in Red, model no. 57Y6361, for $29.99. Coupon code "USP1MA546361" cuts the price to $7.99. With free shipping, that's tied with our February mention and the lowest total price we could find by $14. This USB-powered speaker system features a 90Hz to 20kHz frequency response and a 3.5mm audio jack. Coupon expires May 28.