You most likely don't want such a device at home: it likely makes quite a lot of noise, takes quite a lot of space, and is not really useful as an individual. Its use-case is more for a public/semi-public space, for a group of people to see.
I think you have not watched the presentation video and even the dedicated "use case" for home at their site. They are very much advertising for home use as well. https://www.vestaboard.com/home
