Great price on this - generally $50+!
Has a $15 MIR.
Amazon.com: Logitech G5 Laser Mouse (Blue/Black): Electronics
1. Adjustable weight cartridge: Use up to 36 grams of weight to customize your mouse with a heft and balance thats just right for your game. 2.Adjustable sensitivity: Shift from pixel-precise targeting to lightning-fast maneuvers, without pausing the action. The G5 gives you instant access to three sensitivity levels400, 800, and 2000 dpibefore driver installation. 3.2000 dpi laser engine: Experience the blinding speed and unequaled response of a 6.4 megapixels/second image processor. 4. Full-speed USB: Get blazing speed and instant acceleration from up to 1000 reports/second bidirectional connection. 5.Right-handed comfort grip: Enjoy a natural grip that will not fatigue you. 6.Polytetrafluoroethylene feet: Forget sticky workarounds¿these low-friction feet glide effortlessly across almost any surface.
Logitech G5 Laser Mouse $29.99 after MIR at amazon 
