big spender

idiomatic

(idiomatic) One who frequently makes large purchases, especially of extravagant goods.

Japanese Meaning

大金使い / 散財家 / 豪遊家

Despite claiming to be frugal, Marcus is a big spender when it comes to vintage watches.

節約家だと主張しているが、マーカスはヴィンテージの時計になると散財家だ。

Sense（1）

(idiomatic) One who frequently makes large purchases, especially of extravagant goods.

big spenders

（ plural ）