A Chinese startup is looking to raise $2,000 to fund an initial order for what they are calling the "world's first E-ink computer monitor". It isn't the first, nor is this a good design. But if you have $99 to waste then this might interest you.
This so-called E-ink computer monitor is nothing more than a 6" ereader which communicates with your PC over a USB cable. It's available at a couple price points.
Both models run Linux and will work as a basic ereader with PDF and EPub support. In terms of hardware, the $99 has an HD E-ink screen (1024x758 resolution), frontlight, 4 GB of Flash storage, and a microSD card slot. There's also a more basic device for $79, but it lacks the frontlight and it only has a regular Pearl E-ink screen (600x800 resolution).
Both models have Wifi, but you won't be able to use the Wifi to make the ereader into a wireless monitor. That would be cool, but unfortunately the developers configured the ereaders so they can only work as a monitor when plugged in via USB. That means that the ereader will only get as far away from your computer as the length of a USB cable, which will limit its usefulness.
So is this worth $99?
I don't think so. If this were a wireless monitor, maybe. Or if this was a 10" monitor, absolutely. But as it stands I don't think this is going to be terribly useful.
P.S. This is also not new. Here's a video from April 2012 showing a Kindle DX hacked to serve the same purpose. And here's a video from August 2012 showing a similar trick with a Kobo Touch. And here's an even older video from February 2010 that shows a hacked 5" ereader being used as a second monitor.
If you like, I could show you a half dozen other examples I found on Youtube, but i think I made my point.