选择便宜的维修服务可能会让你占小便宜吃大亏。

Opting for cheap repair services might make you penny wise, pound foolish.

他总是占小便宜吃大亏，结果花了更多的钱。

He is always penny wise, pound foolish, ending up spending more money.

他为了省钱不买保险，结果出了事故，真是占小便宜吃大亏。

He didn't buy insurance to save money, and ended up in an accident, truly penny wise, pound foolish.

你不应该为了省几块钱而买劣质产品，这样做是占小便宜吃大亏。

You shouldn't buy low-quality products to save a few bucks; that's being penny wise, pound foolish.

他们为了节省一点电费，结果损坏了昂贵的设备，真是占小便宜吃大亏。

They tried to save on electricity bills but ended up damaging expensive equipment, truly penny wise, pound foolish.