Buy.com has the Logitech MX518 Optical Mouse for $39.96 with Free Shipping.
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- For Expert Gamers. The Logitech MX 518 redefines extreme performance with a 1600-dpi ultra-high resolution optical engine that delivers startling response and mirror-smooth tracking. Driver-less “on-the-fly” access to three sensitivity levels, a contoured grip, and super-slick feet give you unprecedented control for total game domination!