I wondered who'd be first to shoot them down.
Sorry Pete, but the truth is that there's really very little on the market that experienced brewers would feel happy using. Most have serious failings in safety, or design, or both.
It's not hard to make your own. And the knowledge and experience will help you to fix it when it breaks.
Just to prove I've actually looked at them and am not an 'Armchair Expert' that seem to frequent forums:
Yorkshire Green Fuels: Non sealed processor, No level switch, No methanol recovery/removal, No provision for any sort of fuel finishing, no insulation to prevent you burning yourself.
BioBuddy: Plastic reaction container, No methanol recovery/removal, Very little finishing. Can't see if it's sealed or not. No level switch.
Biobot: Non sealed, No methanol recovery/removal, Plastic reaction container.