Theres another Strikemaster kit made by Galtech models in New Zealand. I have personally seen the Galtech Strikemaster fly and it performs exceptionally well on KJ66 size/thrust engines. Its smaller at 1/5 scale than the Airworld version, but I think the price is only $670 U.S.
http://www.galtechmodels.com/turbine...ster/index.asp