Lenovo offers the Lenovo Wireless K5920 Keyboard, model no. 0C51501, for $39.99. Coupon code "USP1MA431501" drops it to $15.99. With free shipping, that's $8 under our January mention, $24 off list, and the lowest total price we could find. Sales tax is added where applicable. This 2.4GHz keyboard features a mini wireless receiver and ultra-thin design.