I don't want to spend money on clothes that don't last.
ーI don't like to buy clothes that wear out soon.
「すぐにダメになる服を買いたくない」
clothes that wear out soon で「すぐにボロボロになる服」
ーI don't want to spend money on clothes that don't last.
「長持ちしない服にお金をかけたくない」
to spend money で「お金をかける」
clothes that don't last で「長持ちしない服」
ご参考まで！
I don't want to buy cheap clothes that don't last.
・「I don't want to buy cheap clothes that don't last.」
（意味)すぐにダメになる安い服は買いたくない。
<例文>I don't want to buy cheap clothes that don't last. Once I buy a piece of clothing, I will wear it for a long time.
<訳>すぐにダメになる安い服は買いたくない。一度服を買ったら長い間着ます。
ご参考になれば幸いです。
カナダ 
アメリカ合衆国 
