Mad Catz offers preorders of its Mad Catz R.A.T. Pro X Modular Gaming Mouse, with your choice of three sensor options, for $199.99. Coupon code "LDY25" cuts it to $149.99. With free shipping, that's $50 off and the best price we could find. This fully-customizable, modular mouse features a magnesium alloy chassis, analog scroll wheel, Teflon and ceramic feet, 90 programmable commands per game, and interchangeable sensor module functionality. Click here to learn more.

Note that these preorders are expected to ship in October.