You forget the people in a) who don't have the time to deal with bulshit calls. That's where you're losing leads.
So it's a good filter for us, for now. Once we bring the price point down, you're absolutely right -- we want to have a descriptive landing page that makes people think "wow, that's exactly my problem!".
If even one of the competitors has a sticker price and publicly available documentation then I'd be evaluating them closely before even considering you.