There were several such cases in the 1980s, when some oil was under price controls and some was not, inviting the dishonest to underestimate their income or to overcharge their customers.

20世纪80年代有过几起类似的案件，当时一些油类受价格控制而另外一些不受控制，这样就导致一些不诚实的人低报收入或收取其客户过高的费用。

youdao

We never overcharge. It is a fair price to pay.

我们从来不乱出价。这是公道价钱。 。

youdao

Price hikes he had accused the firm of imposing to overcharge Medicare hadn't actually taken place.

FORBES: Magazine Article

They may argue that the use of price-customisation software by sellers amounts to tacit collusion to overcharge particular groups of buyers.

ECONOMIST: Online prices