Originally Posted by
Scenesense
Australian dollars is correct, although changing it on the website (they have an option to do so) did not change the amount by more than $1 USD. Used multiple (Hertz & Dollar) for quotes and this was significantly less expensive using any/all available promo codes and rate adjustments. The COUPON CODE was from the .com.au website; however, it seems the code system is not distinct. There is a similar deal currently through the .com (US) website but not quite as good (2 days, versus 3 minimum).
The quotes don't seem like a fabulous deal to me to, but I don't have any experience renting in Australia so, like you, don't have any real reference point other than what I got through other companies. Meh, I'm relatively happy, approximately 15% lower than the next best rate I could find.
According to the currency exchange website xe.com, AUD and USD are ALMOST at parity, with the AUD being slightly more valuable, so what you are saying makes sense. As of 9:00 PM ET (US), the following applies: 1.00 AUD = 1.05408 USD (In other words, it will cost someone $105.41 USD to purchase $100 AUD not including any currency transaction fee).
In your case, $110 AUD should cost $115.89 USD, and for every $20 AUD increase, there will be approximately $21 USD increase.
So, if the Avis AU site gives you the best deal, by 15%, go with that, because the exchange rate is not factoring into your actual costs in a significant way, however, the site used, rates, and discounts offered do seem to be the main factors in your costs. This is certainly not the case for every currency versus USD.