eBay has this NetGear Push2TV Wireless TV Adapter for $29.99 after instant savings. It's compatible with WiDi (Intel Wireless Display) systems only and wirelessly transmits content from your computer to an HDTV. It also includes an HDMI cable. Amazon
has the same item for $119.99 with an average rating of 3.3 out of 5 stars. Shipping is free.