Bang for buck ergonomic chairs for computer setups ? What are some good ergonomic chairs that are for a decent price for aussies? 

Prefer not to spend more than $350 but not too sure if that budget allows for satisfactory ergonomic chairs as I’ve seen some go for $1k+

Using for long sessions of gaming/entertainment and University work. I don’t want to leave my desk. 

Also prefer the ability to tilt back as I tend to use that a lot when watching movies.