Probably 88-89, maybe borderline 90.
Mainly because the general consensus was that this year was easier than last years so cutoffs will be higher.
To be honest, I don't think the cut off would be higher than last year.
MCQs were harder, short answers were similar but the format is slightly different (Eg. the strategy and international business cycle one), essays would've caught a lot of people off guard, fiscal and distribution of Y and blah. Microreform is consider to be one of the harder topics in HSC economics, and Q28 is extremely hypothetical and theoretical, that it actually was going to catch a lot of people who jumped into the question immediately. That they though it's about current economic situation, but it isn't, it is abstract and theoretical.
So tbh, even general consensus thinks that it's easy. I did too straight after the exam, but thinking and thinking again, it is actually not a easy exam. To be honest, I think the band 6 cut off might be down to 75-78, just my two cents though. Trick paper, abstract and requires much more economic clarity in the mind.