Perth City to Perth Airport has a $25AUD drop fee (Hertz). Australia sure does love their drop fees!!!
Yep. Although in this case it's the airport imposing the extra fee on the rental company which they are passing on to you. Since it will cost you more than $25 in a taxi to get from City to the airport, there's no easy way to save on this. There's no convenient bus, either, unless you use a hotel shuttle, which charges about $16..
I tend to use independent rental companies like [IMG]Ace[/IMG] who you can negotiate some good deals with.