Newegg has the Corsair Vengeance M90 15-Button USB Laser MMO/RTS Mouse for $80 - $35 off with coupon code EMCYTZT1796
[Exp 6/23] - $10 rebate
[Exp 6/30] = $35
with free shipping. Features 5700dpi Avago ADNS-9500 LaserStream sensor, 15 fully programmable buttons with nine macro keys, metal chassis design, and tracking up to 165" per second.