Dell Home, via its Member Purchase Program, offers the Microsoft 3000 Wireless Mobile Mouse, model no. 2EF-00002, for $8.99 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find by $8. It features a USB wireless receiver and 1,000-dpi movement resolution.
Note: Dell's MPP is available to select groups, including students, government employees, military (active and retired), credit union members, and health care workers.