newegg offers the refurbished Apple Digital AV Adapter, model no. MD098ZM/A, for $19.99 with free shipping. That's $15 under the lowest total price we could find for a new unit. It's compatible with Apple iPhone 4/4S, iPod touch 4th generation, and iPad 2 2nd and 3rd generation. It mirrors whatever's on your device to your HDTV or HDMI-compatible display in up to 1080p HD. Deal ends March 21.

A 90-day warranty is supplied, although it's unclear who backs it.