Meritline offers the factory-refurbished Microsoft Wireless BlueTrack Mouse 5000 in Black, model no. MGC-00001, for $19.99. With coupon code "MLC114BN", it falls to $14.99. With free shipping, that's $1 under the lowest total price we've seen on a refurb and $14 less than the best total price we could find for a new one. This wireless mouse features BlueTrack technology (which purportedly works on more surfaces than optical or laser technology), a nano transceiver, up to 30-foot range, and more. A 3-year Microsoft warranty applies. Coupon ends after 100 uses.