BestDealUSA via Amazon offers the eForCity Micro USB to HDMI MHL Adapter for $4.46 plus 50 cents for shipping. That's $1 under our July mention of a similar item and $2 below the lowest total price we could find for one now. The Mobile High-Definition Link (MHL) supports 1080p HD resolution, up to 8-channel audio, 3D video, and more. Select mobile devices and tablets can also charge while using this device.

Update: The price has since dropped to $4.26 $4.30 plus 50 cents for shipping.