Amazon.com offers the Logitech G9X Laser Gaming Mouse, model no. 910-001152, for $84.99. This $20 mail-in rebate cuts it to $64.99. With free shipping, that's the lowest total price we could find by $24. It features interchangeable grips, 28 extra grams of adjustable weight, custom color LEDs, onboard memory for five profiles, 5,700 dpi sensitivity, and USB connectivity. Rebate ends December 28.