As one of its daily deals, Amazon offers the Microsoft Arc Touch Bluetooth Wireless Mouse, model no. 7MP-00001, for $39.95 with free shipping. That's $10 under our January mention, the best price we've seen, and a current low by $10. (Most stores charge over $60.) It features a flexible design, touch scrolling, BlueTrack technology, and purportedly up to six months of battery life. Deal ends today.