Personally I don't have much use for one, especially without more, uh, software. I have basically zero consumer use cases that I find particularly compelling at that price point. Especially when it is that new.
But I also _do_ have several professional uses for something like that if the right software were to get implemented (e.g., #fieldmargin, or even something like #morpholioTrace).
Nothing that would make me rush out to buy one still, but it makes sense why someone would.