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

1.
banyak uang, sejumlah besar uang
a large amount of money, often used ironically to mean a surprisingly large or excessive amount
:
•
That antique vase cost a small fortune.
Vas antik itu menghabiskan banyak uang.
•
You'll pay a small fortune for a house in this neighborhood.
Anda akan membayar banyak uang untuk sebuah rumah di lingkungan ini.