HP has the Microsoft Arc Wireless Laser Mouse in Black (HP branded version), model no. NR150AA, for $19.99 (24.99 – 20% coupon) with Free Shipping for a limited time. To get the discount, use coupon code: AC1874 during checkout. Sales tax is added where applicable.

The Arc Mouse is designed to go with you. Expanded, it’s a sturdy and comfortable full-sized mouse. Folded, it fits perfectly into your bag. It has a scroll wheel for easy navigation, a micro USB transceiver that easily snaps into the bottom of the mouse, a convenient battery status indicator. It features 2.4 GHz wireless with up to 30-foot range, laser tracking, and 4 buttons. It can be used with Windows XP, Vista, and 7.