Logitech M510 Wireless Mouse for $19.99 shipped. Here is a screenshot for your reference. Alternatively, it is available at Amazon for $19.99 with free shipping on orders over $25. It features a 4-button and contoured design, laser tracking engine, and a nano receiver that is small enough to stay in the USB port of a laptop. Most places have this Logitech M510 wireless mouse for about $30.