we're getting there. I think Chromebook manufacturers are being really smart about rolling these things out. In the beginning, ChromeOS was really new, and fairly limiting, so their cheap pricepoint was very important.
Now, people are starting to realize the benefits of ChromeOS and are increasingly more willing to pay a bit more for better hardware.
Dell and Toshiba both have higher end $400+ models, but the cheaper models are still selling well, so from a business standpoint, there's no reason to stop making the cheap ones yet.