Autonomous has really good marketing and sells a really cheap chair that they probably buy for $80 at an insane markup. Don't get me wrong, it's not too terrible. I've sat in one before, and it's certainly better than those stupid "gamer" chairs, but please understand what you are buying.

If you are considering them, tbh I would just go directly to a seller on Alibaba like:

https://www.alibaba.com/product-detail/New-Design-Ergonomic-Human-Reclining-Chair_60803877142.html?spm=a2700.details.deiletai6.5.7af05cf62MXVpn

Personally if I were you, I would look at buying a used Steelcase Leap. I bought one in leather in 2015 for $430 including shipping off eBay. Bought another one from a local dealer that had a ton from an office closeout and paid like $300. I'm looking on eBay right now and seeing pretty similar prices for used and refurbs.

I personally have had the ErgoChair Plus with the naked black TPE (No cushion) for the past 5(?) years and it's been holding up great.