Auto markets are competitive. Excessive profit margins are unsustainable in the long run - rarely for more than a short period outside of market chaos like we've seen recently. And the trends are already going back to invoice plus pricing. International market prices are a good indicator of the cost of production plus at least the minimum margin. And they tend to be very close globally unless distorted by government regulations, taxes, etc. Often those costs can be backed out. Sometimes they're too opaque.
In this case we know the pricing on the low end globally represents at least a base price that we can start with in the USA to price before taxes and other local costs.
