Amazon.com has a Logitech MX500 Optical Mouse for $20.36 with Free Shipping on orders over $25. Excellent Reviews.
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- MX Optical Engine delivers more accuracy and control on more surfaces than ever before n
- No mouse pad required; mouse glides smoothly across almost any surface–no mouse ball to get dirty or dusty n
- Two thumb buttons let you easily move forward or back between pages on the Internet n
- Cruise Control scrolling system provides more efficient scrolling through long documents or web sites