I got the Digital AV adapter in the mail today, and I have to say it's really worthwhile if you plan on docking your laptop at a desk. Eventually a cheaper option will turn up, but I was okay paying the price because it really extends the usability of my setup. Right now I'm connected to a 1200p monitor, a Logitech mouse, a USB3 external hard drive, and power. It's also worth noting that I'm daisy chaining an older USB2 hub for a few more standard USB connections.
Here's a picture:
I'm limited by a pretty shallow college desk, but the setup works.
Here's a picture:

I'm limited by a pretty shallow college desk, but the setup works.