Anecdotally in New Zealand I have several neighbours with new BYDs. In my same neighbourhood there are two Teslas (Model 3) and both were purchased over 5 years ago. No one in their right mind is buying a Tesla in this market, and not because Elon is a twat (although he very much is). BYD is just better value.
The base model 3 and seal are about $10k difference in AU (not a huge difference in that price range) and the BYD is slower with less range.
Personally every time I've rented a BYD (only the Atto admittedly) I've found the UI to be awful. The two Android screens are often out of sync on key information, and the interior looks like it was designed by Homer Simpson making a "future car".
No one is buying the Seal, it's the Atto 3. And 10k is about a quarter of the price, I don't know what you mean by "not a huge difference in that price range".
