安物買いの銭失い
Meanings
1
penny wise, pound foolish; buying cheap things is a waste of money
Proverb warning that cheap purchases often end up costing more in the long run because of poor quality or short lifespan.
To avoid being penny wise and pound foolish, it's better to buy something good even if it costs a bit more.
These shoes broke right away. I guess buying cheap was a waste of money.