P.C. Richard & Son offers the Logitech V220 Cordless USB Notebook Mouse in Purple (pictured, model no. 910-001466, or Scarlet Red, model no. 910-000162, for $12.50. With free shipping, that's tied with our July mention and the lowest total price we could find in any color (apart from the deal below) by $9. Sales tax is added where applicable. This mouse requires one AA battery (included) and features a 1,000 dpi resolution, battery indicator, and more.

A close price: Logitech has it in Purple for $12.99 with free shipping via coupon code "logi_v220_9811". Coupon expires September 12.