auto sales house a s h Fraudulent third party used on a Craig's list post ?Unknown Internet

Was trying to buy a boat on Craig's List.  The seller refered me to a third party, Auto Sales House.  The third party did not have a Google presence, at all, but did have a web site that was only accessible by a link provided by the seller in an email.  The web site was very professional, but there multiple red flags - Locations not existent, fictious people, not connected to Google, promised free shipping on a boat and 7 day money-back guarentee.  Seller was not willing to connect by phone.  After I alerted them that I was on to them, the email link did not work.