Certainly in Sydney. I notice because I think they're over priced at AU$250, and I'm surprised how many school kids have them. I would lose them in a week.
Heaps in Melbourne as well. Personally I find them daggy; if they're anything like the earphones included with the iPhone 3 they'd fall out of my ears if I just turned my head.
Samsung Buds OTOH stay in (and don't have the daggy bits hanging out).
I also have had problems with Apple's wired earphones staying in, so I was skeptical of the AirPods. But they stay in great. Turns out that most of the problem was the weight of the cord.
You might also be surprised how many are knockoffs [1] which are rapidly improving in quality [2]:
[1] https://www.macworld.com/article/3311456/airpods-knockoffs-t...
[2] https://m.youtube.com/watch?v=Ml3wayRMK_s