Generally, airline operated lounges do not offer paid access, but there are/have been exceptions: Turkish Airlines and AirNZ offered paid access to their lounges (if you were flying with them).


And several companies offer lounges to anyone willing to pay the fee:

http://www.executivelounges.com/ has about 40 lounges.
https://www.plaza-network.com/ covers 35 airports. Including SYD

Emperor lounge at AKL http://www.aucklandairport.co.nz/Air...or-Lounge.aspx

Changi has several http://www.changiairport.com/en/airp...e-lounges.html