Lenovo offers its Lenovo N3902A Wireless Mouse in Red, model no. 57Y6673, for $29.99. Coupon code "USP1F446673" cuts it to $10.49. With free shipping, that's $2 under our mention from last summer and the lowest total price we've seen. This mouse features a 1,000 dpi resolution and USB dongle. It requires two AAA batteries (not included).