Another variant of this scam and this scam linked to a guy called Manuel Fichter - the basic pitch is that you get an email offering to buy your domain name which lists a number of "approved" domain appraisers, the one that appears to be cheapest is actually run by the scammer.
Avoid this one. If you live in Canada and believe that you have been defrauded, then contact your local RCMP and make a complaint about:
38 Matthew Drive
Hammonds Plains, NS B4B 1T8