Meritline offers the refurbished Razer Abyssus Optical PC Gaming Mouse, model no. RZ01-00360100, for $29.99. Coupon code "MLCK05TN" drops it to $19.99. With free shipping, that's $13 under the lowest total price we could find for a new one, although we saw it new for $8 less last spring. This 3,500 DPI mouse features a 3.5G infrared sensor, three-button operation, and toggles for polling rate adjustments.
Note: No warranty information is provided.