Logitech K400 USB Wireless Keyboard with Touchpad for $39.99.  Shipping is $2.99 for a total of $32.98 shipped.  Here is a screenshot for your reference.  It features 33-ft (10-meter) wireless range, built-in multi-touch touchpad and plug-and-play setup, and more.  This may be very handy for a home theater PC setup (HTPC).