It's very hard to say without subscribing to your website and sending coins, how much exactly I get from you for 1 coin in AUD at any given time.
All sites that buy coins in AU basically say it on the first page, like $1234 + 5% and do not require any subscription, you just fill in your bank details, get a quote - before sending coins - and then send coins if you're happy.
Your service for selling coins seem to be very unclear and unnecessarily complicated.
so those other sites did not collect AML or KYC documents?
Not for selling for sure, I've never bought coins in my life so can only talk about selling, you can google "sell bitcoin Australia" and see for yourself, normally it's just one page where as I said you first get a quote for the desired amount, then fill in your email and Australian bank details, that's it. I'm no expert but I believe they operate legally and some of them do it for a long time, so demanding anything more than that simple interface seems unreasonable.