I was looking at the Dynavin for a VW, and saw that the European version is less than half the price of the North American version

Looking for the e46 I see two options, the Dynavin 8 Premium and the Dynavin 8 Premium "Flex":

Premium: https://www.dynavin.de/produkte/car-...o-3er-bmw-e46/
Premium Flex: https://www.dynavin.de/produkte/car-...x-3er-bmw-e46/

The only difference seems to be the software licenses for the google play store and apple carplay via zlink, and maps/navigation.... each cost 100. frankly you can probably just use Apple Maps with Apple Carplay.

It appears domestically we only have one choice, and it starts at $700: