The chair is listed for $2,385 but a 20% discount applicable by chatting through live chat.
The agent said that it is a Black Friday discount but it is not advertised on their website.
Update: The discount code is VIPBF (thanks to user lordrupertliverpool)
I wanted one of these chairs as I have been working and studying from home over the past 10 months and I'm starting to get bad lower back pain.
I have been keeping my eye on the second hand Herman Miller market but they don't come up often in SA and the prices are absolutely ridiculous. e.g. Someone wanting $2100 for a 3 year old chair, someone wanting $900 for a 18 year old chair, someone wanting $500 for a broken chair where the levers and adjustments don't work. I have seen a few Sahls come up for $500 but I really wanted the Mirra or Aeron as they are specifically recommended for their lower back support, which is what I need.
If you are purchasing yours for work / working from home it would be worth chatting to your boss to see if they would be willing to trat it as a fringe benefit. As mine is for work and study, it is Fringe Benefits Tax exempt, so my boss was happy to buy it for me as a fringe benefit meaning she can claim back the GST and pass that discount onto me, as well as me being able to pay for it with my pre tax income, so it basically brings the cost down to $1,988 - 180.72 GST = $1,807.28 - 32.5% (tax) = $1,219.91 post tax equivalent. The benefit of doing it as a fringe benefit would be that you can claim back the GST and you get the tax saving benefit immediately compared to buying it and claiming it as a tax deduction which will need to be depreciated over its useful life instead of getting the whole benefit in the year of purchase.
I didnt ask if the 20% off promotion was only for the Aeron but I would guess that it could be across their whole range.
I tried one out and it was horrible for posture and every time you moved it would wobble, creak and crack. Never again. Will stick to my $200 officeworks chair