Ending today, Lenovo offers its Lenovo M220 Mini Portable USB Stereo Speakers, model no. 55Y2033, for $29.99. Coupon code "USP1O12033" cuts them to $9.99. With free shipping, that's tied with our mention from six days ago and the lowest total price we could find by $10. Sales tax is added where applicable. Features include a USB interface and integrated amplifier.