Microsoft RVF-00001 Arc Touch Mouse for $29.99 shipped.  Order online for in-store pickup at Staples to lock in the price, ensure availability, and save on shipping.  Otherwise, shipping is $9.95 for a total of $39.94 shipped.  Here is a screenshot for your reference.  It features a stowable nano transciever, touch to scroll technology, a curved construction, and more.  Most places have it for about $59.