This wireless mouse costs a whopping $105 but it performs well and offers a 50+ hour battery life. It's mainly let down by its software, which is hard to navigate and laggy.
"Finding a good gaming mouse isn't hard, but finding one that's wireless is. Even high-end options suffer from a major flaw: poor battery life. GIGABYTE realizes this and made sure no one could say that about its Aivia M8600, which in our tests lasted an entire week in 'gaming' mode. Let's see if that, and its other features, warrant the M8600's $105 price."