Not sure that prices are dropping as much as it is people are only paying for what they are getting.
Graysonline have an unlicenced, July 2003 build, L322 TDV8 (3litre BMW mtr?), Black HSE, 245,000k, 1 key only, with note that "immobiliser located next to gear selector" currently at $9000 +7% surcharge.
Vehicle looks straight enough, but not sure that the vehicle is worth much more, and you are really buying "a cat in a bag" as far as knowing what you are actually getting into.
Complex vehicles are really only as good as their service history, anything without a well documented service history can be the stuff of nightmares.
Buyer beware.