newegg offers the Rosewill Laser Gaming Mouse with Adjustable Weights, model no. RM-5000L, for $14.99. Coupon code "RWGG08" cuts it to $11.99. With free shipping, that's the lowest total price we could find for such a mouse by $31. It comes with seven 7-gram weights and features three dpi settings. Coupon expires August 12.