Here I am.
CEC is a bus so one kwikwai is enough for all components in the HDMI tree (TV, receiver, blue ray, ...).
However, as specified by the standard, the tree has a single device at the top (the TV), so yes in theory you'd need one kwikwai per TV.
But it may work anyway in practice with several TVs according to the use case. For instance, switching off several TVs may be possible.
For the price, we're just starting and our volumes are low. Plus we're providing a complete solution that is installed and working in minutes.
So the moment, the price remains 345 CHF, available immediately in glorious red
That said, we'd happy to heavily discount one device for anybody with the time, inclination and competence to build a driver as suggested above. Interested parties, please contact us directly (via PM or email).