Auto, Do you know what C1 costs GRR is expecting/targeting over...

Auto,
Do you know what C1 costs GRR is expecting/targeting over the next couple of quarters? Recent estimates in these threads have been way off. GRR said in latest report that $89 was "consistent with expectations". That shocked a few of us (including myself) which could have been avoided if there was some meaningful guidance on costs going forward in June quarterly. There must be a costed capex budget/program. Would be good to know what it is (in broad terms) because it sure seems to be eating up a lot of revenue. Cheers.