Heights Mobile via eBay offers the Logitech M225 Cordless Optical Mouse in Dark Steel, model no. 910-002538, for $17.99 with free shipping. That's the lowest total price we could find in any color by $2, although it was $8 less in our mention last summer. This 2.4GHz wireless mouse features a USB nano-receiver, rubber grips, scroll wheel, and more. Deal ends August 25 at 10:18 am ET.