Meritline offers the open-box Microsoft Wireless Bluetrack Mouse 5000 in Black, model no. MGC-00001, for $19.99. Coupon code "MLC9MF15N" cuts it to $14.99. With free shipping, that's $5 under our mention from a month ago and $15 below the lowest total price we could find for a new, factory-sealed unit. 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. Coupon expires after 100 orders.

Note: A 90-day Meritline warranty applies.