Meritline offers the Microsoft Arc Wireless Laser Mouse in Black (pictured), model no. ZJA-00001, or Green, model no. ZJA-00025, for $25.99. Coupon code "MLCK323DNL1" drops it to $19.99. With free shipping, that's tied with mention from a month ago and the lowest total price we could find in either color by $4. This 4-button mouse features a folding design, snap-in USB micro transceiver, and more. Coupon expires after 100 uses.