I heard someone say that people who buy three pairs of socks for a thousand yen aren't the kind of people who save money.
この場合、次のような言い方ができますよ。
ーI heard someone say that people who buy three pairs of socks for a thousand yen aren't the kind of people who save money.
「３足1,000円の靴下を買う人は、お金がたまらない人だと聞いたことがあります」
ご参考まで！
アメリカ合衆国 
カナダ 
