Lenovo offers Lenovo 400 Wireless Mouse for $7.85 (reg $19) with free shipping.

Product Description:
Today you’re at the office, but tomorrow -- who knows? No matter where you are, though, you need a mouse you can rely on: easy to pack, plug in, and use, with simplicity that doesn’t sacrifice quality. The Lenovo 400 Wireless Mouse gives you it all.Key Details:

• Nano USB provides strong 2.4 GHz wireless connection
• Responsive and clear tracking with 1200 DPI resolution optical sensor
• Up to 8 million clicks for left and right buttons
• Comfortable and functional in left or right hand
• Lightweight for travel at 65 g (2.29 oz)
• Battery life lasts up to 12 months(may vary based on usage)