I read that's not really the case - there's a bunch of equipment on EU-spec (and some other market) BYDs that comes from EU vendors such as Bosch. It additionally has a completely different AC unit as the kind of refrigerant BYD uses in China is illegal in the EU.
I'm not saying it justifies the price difference, but there are changes between the cars.
Right, so we are never going to see it for 20 grand in the US. Maybe because of tariffs and taxes, as you say, or maybe just because BYD isn't going to set the price at 20K in a market with 10x the average income.
That is a fair point. But then it just reveals that the comparison was contrived from the outset and there was no point to be made. It has never been the case that products in different markets were priced in coordination. The price is always whatever the market will bear, it has zero relationship to the cost to produce unless the market has a lot of competition.
So it's really just tariffs and taxes making it that expensive elsewhere.