Groupon offers the Hype Bluetooth Curved Optical Wireless Mouse, model no. HY-7015-BTM, for $12.99. Coupon code "GOODS10" cuts it to $11.69. With $3.99 for shipping, that's the lowest total price we could find by $3. It features an optical sensor with 1,000 DPI sensitivity, Bluetooth 2.0, and scroll wheel. Deal ends today.