I was looking for a comfortable computer chair as these days mostly working from home. I went to Officeworks store and tested all the chairs and found the Thunder X3 being a comfortable chair there. It was $269 (+ no store stock in NSW but available online).
https://www.officeworks.com.au/shop/officeworks/p/thunder-x3…
Checking online for a better price found Umart had them on sale for $199, so have just ordered one from Officeworks over the phone for $189.05 which I think is a good deal (It will be ready to collect at Officeworks in about 5 days).
There are more colors available at Umart at the same price except the Blue/Black one which is $229.
I really liked the chair + reviews check https://www.templeandwebster.com.au/ThunderX3-TGC12-Series-G…
another alternative, another comfortable chair option is the pro one
https://www.officeworks.com.au/shop/officeworks/p/typhoon-pr…
here is the umart link https://www.umart.com.au/ThunderX3-TGC12-Series-Gaming-Chair…