Best Buy offers the Microsoft Sculpt Touch Wireless Mouse in Navy, model no. 6PL-00003, for $19.99 with free shipping. That's $5 under our mention from three weeks ago and the lowest total price we could find now by $15. It features BlueTrack technology and works on a range of surfaces, a touchstrip which allows 4-way vertical and horizontal scrolling, and 16.4-foot operating range.

Of note, Amazon charges the same for its Prime members, although it may take up to four weeks to ship.