Lenovo offers its Lenovo N3902A Wireless Mouse in Red, model no. 57Y6673, for $29.99. Coupon code "USPC11AG46673" cuts it to $12. With free shipping, that ties last month's mention and the lowest total price we could find by $20. Sales tax is added where applicable. This mouse features a 1,000 dpi resolution, USB transmitter, and more. Coupon expires August 31.