Per the Australian Crime Commission reporting purity has dropped over 2013-2014 in a big way though overall MDMA is available in Australia at substantial quantities. You can get the report
here. Its an interesting read. But as the mods have said, availability is about who you know.
But its also relative to who you are and where you are in life. Back in 90s and early 2000s I was a young man working in a sector where the median age was 21. As you can imagine it was crazy. Everyone partied all the time. The company directors, everyone was poppin E's, snorting coke, fucking, dealin, partying. So many good clubs back then. It was insane some of our parties that happened in town.
But one gets older and at the sametime several big things happened. There was a big crash of dot.com companies and telcos. They were driving a lot of drug use in Sydney. A whole heap of dealers, some pretty big movers, got arrested and what not. So with a momentary drop in availability, whilst at the sametime all of the 20 years were getting older. We moved onto other sectors that had older workers and less drugs. Simultaneously the internet and research drugs starting hitting. I remember reading BL about how there was a big source, lots of the old timers in BL would discuss serendipitously, implying its existence but making sure that no one knew about it so it couldn't be ruined.
See a lot of the research chemicals were technically legal at the time. They weren't analogues and they were being sent here in large quantities. I suspect some people out there have serious weight. At the sametime all this was happening the mineral boom was starting up and a lot of drugs were moving to the big mining camps and such. A lotta people moved out to WA and in turn cocaine and MDMA followed the money.
The big heroin boom of the 1990s gave way to the big meth boom. See a lot the heroin addicts jumped onto meth as it really helped you out of the doldrums of post withdrawal cravings. Also for some reason the cops must have closed down on some pretty big import routes because it seemed to me that 2003+ became all about domestically produced drugs like meth.
But at the sametime all this happened a large generation of drug users matured, married, had kids and tried to kick our "bad" habits. The forums back then were littered with so many posts about "losing the magic", I definitely felt burnt out from MDMA use. I wasn't getting the magic anymore and that was disappointing because it just felt like I was taking speed, throwing money down the loo. For me, moving jobs, having several of my dealers (who moving major weight) getting busted really made it difficult to get MDMA.
Now days I work in a place where the median age is 55. Its all about redundancies, packages, retirement, round the world trips, grandma's and office restructures.
So the worlds a different place, drugs are different and it looks like MDMA is slowly ceasing to be the socially changing force it once used to be. Hopefully though once its legalised for the treatment of PTSD that we'll see a resurgence of pure MDMA on the market. But until then it looks like it comes down to who you know, or how good you are with bitcoins, darknets and TOR.
(and let me tell you that the darknet drug markets are fucking stupid and you can easily get ripped off. Do not trust them, use the escrow services if they're available and don't give em a cent unless you get your package).