Resurrecting some earlier discussion earlier, superduper confirmed in her appearance on Vivi’s goodbye that she moved back to Hong Kong (where she was originally from) and isn’t living in the main part of the city, instead living in the village/rural parts of the city.
Doing some quick searching, some of the houses in areas that match this criteria come out to around 34mil HKD, which in USD comes out to….
$4.4 million USD.
Edit: Nevermind, I have zero reading capacity, Rie was the one who bought the house, not Vivi
But yeah, that's a lot of money