Logitech M305 Wireless Optical Mouse (Blue) for $11.00. Shipping is $4.98 for a total of $15.98 shipped. It is also available in Red and Purple. Here is a screenshot for reference. This wireless mouse features 1000 dpi optical tracking, 2.4GHz wireless frequency, nano receiver small enough to stay with the laptop without the need to be unplugged and has a 6-monthe battery life on a single AA battery. Most places have it for about $27.