Shop4tech.com offers the refurbished Microsoft Arc Wireless Laser Mouse in Black, model no. ZJA-00001, for $28.99. Coupon code "NB15" trims it to $24.64. With free shipping, that's $7 under the lowest total price we could find for a new, factory-sealed unit. This 4-button mouse features a folding design, snap-in USB micro transceiver, compatibility with Windows and Mac, and more. Coupon ends November 8.

No warranty information is provided.