Staples offers the Logitech M705 Wireless Laser Mouse in Black, model no. 910-001935, for $29.99 with free shipping. That's tied with our August mention and the lowest total price we could find by $10, although it was $6 less via mail-in rebate earlier last month. It features a nano-receiver, fast scrolling wheel, and up to three years of battery life. It requires two AA batteries (included). Deal ends September 21.