IOGear GKM681R 2.4GHz Compact Wireless Keyboard with Trackball for $24.99 shipped.  Here is a screenshot for your reference.  Alternatively, it is available at Amazon for the same price with free shipping on orders over $25.  This is a 2.4GHz wireless compact keyboard with built-in optical trackball and works well for a home theather PC (HTPC). [...]