Just some guy
People are reporting problems here. A person who just joined the forum like five minutes ago and is sending you a private message about having that special and difficult part you want are generally here to rip you off. If someone messages you, look at their profile. Have they just joined and never participated in the forum with any posts? Best to just report them and then "ignore" them. If enough people report any such a person then they will be banned. It used to be they would just get a warning but there's been entirely too much of this lately.