I was in the market for a desk and chair recently. Long story short: sitting at a floor table and on the couch all day was causing issues with my back and hamstrings.
I did look into the AltWork setup mentioned. At $7000 (or $4500 for manual option), it's quite expensive but not that bad if amortized over a 20 year period of working 8 hours a day. Investment in long-term health is worth it if the product works as it should and lasts the expected amount of time.
Aside from my wife not wanting it in our apartment (I understand), there isn't enough evidence that zero gravity workstations improve health versus just a good ergonomic chair (ie. an adjustable chair that fits your body) and desk (adjustable and gets low enough to support 90° elbow angle without hitting your legs). In all cases, one needs to take breaks to stretch and move around, not to mention daily exercise.
Went with a HM Embody (armless) chair and IKEA Skarsta hand crank desk instead; zero regrets and I wish I got them earlier (especially the Embody)!