If you'd like a cheaper alternative (and don't mind a little DIY) I wrote a library that lets you render HTML onto low cost ePaper displays using a Raspberry Pi.
It would be pretty easy to modify the chain of command to have the backend start and stop the Chromium process. I haven't taken any detailed measurements, yet, but I'm guessing simple web pages like the example weather dashboard aren't too CPU intensive to render.
Universal Robots | Boston, MA | Principal Software Engineer | Java | Full Time
Universal Robots is making robotics easier to use and more accessible than ever before. By designing robots that can work alongside people, we are finding innovative solutions to some of the most important manufacturing issues facing businesses today. We’re leading the market in collaborative robotics and looking for highly skilled engineers to take our success to the next level.
https://github.com/samsonmking/epaper.js