Lenovo offers its Lenovo M3803 USB Optical Mouse in Black, model no. 0B46973, for $19.99. Coupon code "USP1DE346973" cuts it to $5.99. With free shipping, that's tied with our August mention as the lowest total price we've seen for this mouse. (It's also a current low by $21, outside of the price below.) Sales tax is added where applicable. This wired mouse features a scroll wheel, USB connectivity, 1,000 dpi, and more. Deal ends December 31.

A close price: Amazon has it for $6.60 with free shipping for Prime members. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $8.25.)