Platinum Micro via Walmart offers the Logitech M170 Wireless Mouse for $7.59 with free shipping. That's a buck under our April mention and the lowest total price we could find now by $1. (Most stores charge $10 or more.) This 3-button mouse features a scrolling wheel, nano wireless receiver, Logitech advanced optical tracking, 2.4GHz wireless technology, a 33-foot range, and it requires one AA battery (not included.)