money pit

US /ˈmʌn.i pɪt/
UK /ˈmʌn.i pɪt/
"money pit" picture
1.

studnia bez dna, skarbonka bez dna

something that costs a lot of money to operate or maintain

:
That old car has become a real money pit.
Ten stary samochód stał się prawdziwą studnią bez dna.
Buying that huge house was a mistake; it's been a money pit ever since.
Kupno tego ogromnego domu było błędem; od tamtej pory to studnia bez dna.