Have used 2 of the below chair from Office works in the past. This is cheaper and seems to have better wheels and more padding, which were the main annoyances with the old one. Enjoy.
Similar chair @ office works $149
UPDATE - cheaper with code PRACTICAL https://www.ozbargain.com.au/node/380878 $101.15 @ https://www.ebay.com.au/itm/OVERDRIVE-Racing-Office-Chair-Se… thanks to stuhtb
PU leather warning.
http://forums.whirlpool.net.au/archive/1839714
https://www.reddit.com/r/dxracer/comments/4pm2pd/appearance_…
Et cetera.