Amazon.com has the Logitech MX518 Optical Mouse for $34.73 with Free Shipping.
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- Sensitivity Adjustment – Dedicated controls to switch “on-the-fly” from pixel-precise targeting to fast-twitch evasive moves. n
- Advanced software – Battle-tune your MX 518 with up to five custom sensitivity settings. n
- Superior grasp – Sculpted thumb support and contoured grip for incredible comfort during even the longest gaming sessions. n
- 1,600-dpi resolution – Ultra-high resolution, 1600dpi MX Optical Engine delivers pixel precise tracking.