small fortune
US /smɔl ˈfɔr.tʃuːn/
UK /smɔl ˈfɔr.tʃuːn/

1.
sejumlah besar wang, harga yang mahal
a large amount of money, often used ironically to mean a surprisingly large or excessive amount
:
•
That antique vase cost a small fortune.
Pasu antik itu berharga sejumlah besar wang.
•
You'll pay a small fortune for a house in this neighborhood.
Anda akan membayar sejumlah besar wang untuk sebuah rumah di kawasan ini.