Need help doing an advertising assignment;

Advertising to be placed in any of Australia's five major cities, though any equivalent rates would be useful.

Mediums to be used;
– Online banner ads
– Bus advertising (on buses, inside of buses)
– Bus shelters / Train stations
– Posters around shopping centres

Any help, greatly appreciated!

Your best bet is to actually contact the companies in those cities that provide these services and ask them their rates.