I have little to no experience with houses that size (I live in a condo), but I understand the concept and the market segment, yes. It mentions that this functions locally, so I take it there's a server involved, that I imagine is some decent portion of this cost?

You may wish to find some way to clarify that market segment in your marketing, I think a lot of HN visitors might assume this is going to be a $99 hub or something similar. We need to see that value represented, because we are definitely going to dig up that price tag. ;D