I noticed the chassis and accessories for the UH-60 has a Economic value of 100, this seems like a bug as the traders will sell these parts for next to nothing.
<item name="vehicleUH60chassis">
<property name="Extends" value="vehicleWheels"/>
<property name="CustomIcon" value="UH60chassis"/>
<property name="DescriptionKey" value="vehicleUH60chassisDesc"/>
<property name="EconomicValue" value="100"/>
</item>
<item name="vehicleUH60accessories">
<property name="Extends" value="vehicleWheels"/>
<property name="CustomIcon" value="UH60accessories"/>
<property name="DescriptionKey" value="vehicleUH60accessoriesDesc"/>
<property name="EconomicValue" value="100"/>
</item>