Be sure to check out what Gizmodo has to say about the SteelSeries Sensei because that's the basis for this SteelSeries Call of Duty Black Ops II Gaming Mouse that Amazon is selling for $29.99. At it's lowest historical price, fans of COD (and people that can live with the branding) are going to get a killer mouse at a sweet price. The unbranded Sensei sells for $60 or more.