The Good Blokes via eBay offers the refurbished Netgear Push2TV WiDi Wireless Display Adapter, model no. PTV3000-100NAS, for $29.99 with free shipping. That's tied with our May refurb mention as the lowest total price we've seen for this adapter. (It's a current low by $20.) Connect a smartphone, tablet, laptop, or other Intel WiDi wireless display-enabled unit to this device to see it on your TV. It features support for up to 1080p resolution, USB connectivity, 802.11n wireless, and one HDMI input.
Of note, no warranty information is provided.