Be Careful when purchasing parts or tools

Hi All, while I was away on holiday in Spain I received and email from someone saying " am I still interested in purchasing a Healtech OBD tool", if so I have mate who is selling one here is his email address. I was unable to access this forum from my iPad as hadn't used it b4, emailed the chap to find out the score, it turned out, I believe to be a scam so be carful out there, after telling him no longer interested got another email trying the same approach. It was only the fact I was persistent with asking questions which he avoided answering that he started to get pushy, (assume it's a he but it could have been a her). at home now and no trace of any name he used on here and this is the only place I have looked into an OBD tool.