The chair cost be around $700 at the time, so that's <$100 per year or <$0.50 per day.
Also the chair came with a 12 year warranty. A couple months ago the pneumatic cylinder went out. I called a local Aeron deal and since I bought the chair from a authorized dealer, they sent somebody to my house and fixed it for free.
(This is not to say, by the way, that you might not experience chair-related pain in your thirties, or even earlier. But the odds do seem to go up in middle age.)
My only concern -- highlighted in the article -- is that my Aeron isn't enough. I'm amused to find that experts think the thing is too low -- it is too low. But maybe that was partly because my pneumatic cylinder was about to go out -- mine just went. Fortunately my chair is also under warranty!
I'll look into these wacky standing chairs.
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[1] Slightly off topic, but: I wish, when I was in my twenties, poorly paid, and absent-minded, I'd gotten email every six months saying "the dental checkup you're about to skip will eventually cost you something like $10k or $15k in root canals and crowns. Or, alternatively, you could lose your teeth and spend forty years cursing your bridgework and dentures."
The seat pan on my Dad's chair (which he bought around 1997) broke a couple of times, at which point they simply replaced the entire chair.
He's been using it without complaint ever since.
And to the parent: If you like your Aeron, you should seriously consider the Embody - lots of time and money went into making it a significant upgrade worthy (imho) of the premium price.
The short answer: no. Chairs appear to be one of these products in which you get what you pay for.