Ben
I provided my importing agent with a copy of the receipt for the purchase of the car back in June 2008. That was for 8500 quid. I told her that I figured the value of the car at the time of the import was about 7000 quid (August 2009). The valuation for duty, etc, was $A16K or so, down to the nearest cent. Customs must have taken some value in the range and converted using the exchange rate at the time. Doesn't seem as though they made any attempt to find a local market value.