Thrifty Australia excess Kilometers
 

Maybe I should have looked at the agreement more closely but I exceeded my 400 free kilometers by 229 on returning the car to Broome WA the agreement said 0.25c a kilometer, just to let others know the reason for the bill of $72.54 instead of $62.97 ( The charges which are added are: 3.5% admin recovery fee, 10% premium location surcharge (airport fee), 1.36% credit card fee and 10% GST. )
So these charges are not only added to your normal charges but the excess K`s as well so be careful if you exceed any Kilometer charges.

This is not restricted to Thrifty - it applies to all rental car companies. These charges also apply if you damage the car and have to pay the excess! Lack of clarity/disclosure is very annoying!

The one exception to this is Avis, which quotes excess km including all charges (but only on avis.com.au), as they were fined for not disclosing charges correctly.