I viewed IBIS in May this year at Isis Marina, Oxford. The owner was selling after several years of infrequent use. He was asking £8500 for it.
It was somewhat neglected, but still quite serviceable. He had bought the boat from the previous owner, for £5000, who had allowed rainwater to flood inside the boat.
There was evidence of significant rusting on the inside of the base plate, so I decided not to purchase. The boat was ballasted with several blocks of concrete, which I found a bit odd. He had covered most of the inside with white paint and reupholstered in a shock pink fabric it looked a bit of a mess.
The boat had been lengthened by about 4' at some point.
The Vetus engine proved quite effective, though I understand the band device had failed at some point requiring a significant rebuild of the pully support and wheels.
The boat, I believe, was sold to another person soon after my viewing.