HP offers its HP X9000 Omen Laser Gaming Mouse, model no. J6N88AA#ABL, for $62. Coupon code "SPARK15" drops it to $53.99. With free shipping, that's the lowest total price we could find by $3. It features six programmable buttons, on-the-fly dpi sensitivity switching (from 400 to 8,200-dpi), and a polling rate of 1,000 Hz.