Meritline offers the Microsoft Arc Wireless Laser Mouse in Deep Olive Green, model no. ZJA-00025, for $26.99. Coupon code "MLC119BN" drops it to $19.99. With free shipping, that's tied with our mention from a month ago and the lowest total price we could find for this mouse by $12. This 4-button mouse features a folding design, snap-in USB micro transceiver, and more. Coupon expires after 100 uses.