Can buy the 94cm Jost rakehead (aka Arborrake) from the online shop here for $50 + about $15 freight
http://m.europeantoolsaustralia.com....huna-94cm-rake
Also saw on their FB page that arborrakes are supposedly avail by order from 'Home Hardware' stores -- should be one of those out your way.
have you tried google search for 'jost rre48e24' rake? It appears Jost is the Begian maker
joe