Also, don't fall for the marketing of the "gaming" chairs or any of those that look like racing seats. I had a maxnomic and it is horrible for long sitting sessions. Finally spent the money on a Herman Miller Mirra and I can sit for hours with no issues.

My job bought me a decent (not great, not horrible) chair from Amazon. It was leagues ahead of what I previously had. I took my old one home. It sucks... Then COVID hit. I took my Amazon chair home. So much better. It's still home. :) I've had multiple back surgeries, and having that lumbar support and better posture really makes a huge difference. And the chair wasn't that expensive, either. It's a low end chair for those standards, but the price isn't that much more than the really cheap crappy ones. It's worth it to invest just a few more dollars into a higher quality chair. I'm sure it's worth it to spend a bit more than that for a much, much better chair.

Sometimes, investing just a little more into something can make a huge difference. Going frugal can mean spending a little more now but saving a lot more (in repurchasing, pain, Dr. bills, out of work for pain, whatever) in the long run. I look at trends and historical data for frugality.