Staples offers the Microsoft Explorer Touch Mouse in Red, model no. U5K-00003, for $19.99. Choose free ship-to-store pickup to avoid the $9.95 shipping charge. That's the lowest price we could find by $11. Sales tax is added where applicable. This wireless mouse features one-touch scrolling, BlueTrack technology, five customizable buttons, and purports to have up to an 18-month battery life.