Just got an Email in response to an ad here from someone claiming to be HA5CUG.
No activity on that call sign on line since 2010, and "claims" to be a reliable Buyer on this site are from 2014.
I dont know for a fact this call signs being improperly used, BUT...
Todays Email was from Public Domain internet (Gmail), not the local ISP Email used on QTH.
Gmail and Yahoo? are the home of all scammers.
Caveat Emptor