I am surprised that they wern't retained by Honda - they had to get something out of their investment in F1 afterall!
"All race cars will be sold as rolling chassis, without engines or other ancillaries and they are expected to fetch £7,000-£22,000 each."
£7,000. That's not a lot of money for quite a bit of carbon fibre. Almost worth buying and sticking a decent road going engine in one for track days!