Heli for sale scam
We regularly get contacted (normally by an over keen agent trying to become the sole-agent to sell it) by someone trying to do a side deal a few times every year, pointing out that it's already for sale on so and so website.
So of course we contact the website and they ignore us as we were not the person that posted it ! Ironic but sensible.
Try telling the police "so there hasn't been an actual crime committed then" or "action fraud" or anyone else - forget it.
So the obvious question is - why wouldn't you give it a go if nobody is interested in dealing with it at source ?
CC