I thought the best way to get validated information was to go to Jabiru's own website and have a look at aircraft for sale in the classified section. I went there about two years ago when I was thinking about buying an aircraft and I was genuinely surprised at how many advertisements that were saying Jabiru aircraft 600 hours, engine 250. This was over and over again! There were never any advertisements that said Jabiru 1500 hours, engine 1500 hours. It just didn't happen.
I just went there again this morning to have another look to validate this comment but it now seems their website is infected by a Trojan and it will not allow you to visit (using the antivirus software installed on my computer) I don't suggest you go and visit just to validate what I'm saying in case you don't have decent anti-malware/antivirus software installed that is current and updated.
Perhaps, this is the same infection on their website that seems to infect the Jabiru engines ? ?