A chum of mine pointed me at
this website as there was an aircraft being advertised that he knew would be of interest to me. When I contacted the owner (known mutually to my chum and I), I learned that although the seller's address seemed legit, the spec was completely ficticious and the asking price was 25% less than book!
There seems to be no way of contacting those responsible for the site, so maybe the whole site is a scam
"If it seems to good to be true, then it probably is...".