I also spotted these on Ebay Alan a few days ago and thought they looked familiar - having a small number of AB figures in metal in my collection. It really is not fair to the original sculptor/company that the figures are pirated although I doubt that much can be done in regards to the origins and legalities of the original figures.
AB figures web site provides a lot of information about Tony Barton. He is based in Australia and sells through ABfigures or Eureka miniatures UK.
Not the first time he has had copyright problems.
The AB site tells you about his technique with Fimo for the masters. Clever stuff. Might try it.