FashionWomenSale via eBay again offers the mini USB 3D Optical Finger Mouse for $1.98 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find by $2. Compatible with Windows and Mac, it features a multi-tasking function which allows simultaneous writing and typing, USB interface, two buttons, scroll wheel, and 1200 dpi resolution.

Note that this item ships from China and has an estimated three to eight week shipping time.