Maximum PC: Is all that cold, hard cash weighing you down and creating an unsightly bulge in your bank account? If you're looking to shed a chunk of green, the SteelSeries Sensei Wireless Gaming Mouse is is available to pre-order today for $160. That's not the most expensive rodent we've ever seen, though it's certainly in the upper echelon of high-priced gaming gear. What you get in return is a high-end gaming mouse with SteelSeries Engine 3 CloudSync compatibility. Allow us to explain.