OK, so checked with DF and looks like I remembered the price just a little bit wrong DF pretty much organised the whole thing, I just nodded and said "ooooooh pretty" when he showed me where we'd be diving It was about AU$900 (just under) but that was for both of us, plus transfers each way. We were staying about an hour from the dive site so the transfers cost us a bit. It would have been more like $700 (for the two of us) if we were staying right near the dive site.