Found these elements today. Thought the prices were excellent, but could be wrong. They have other types too:
http://www.sparkydirect.com.au/p/948215/ho...---hwcs-36.html
Hotwater Element Copper 1800W - HWCS-18$58.00$24.89More Details...Hotwater Element Copper 2400W - HWCS-24$58.00$25.99More...