Luggage in excess of 100 kg will be charged extra.

超过100公斤的行李要额外收费。

youdao

Words longer than ten letters are charged extra.

超过十个字母的字要加价。

youdao

Cash is cheap (you won't get charged extra to use it), but it's not necessarily safe to carry a wad of it around when cavorting in unfamiliar locales.

用现金支付便宜（用现金不用支付任何附加费用），但是当你在一个陌生的地方玩乐的时候，拿着一大笔的钱，那就有点不安全了。

youdao

Still, some larger passengers who need more than one seat believe being charged extra is discriminatory and the airlines are not accommodating the growing American waistline.

CNN: Airline policies juggle larger passengers

The rise in the police precept means that Band D council tax payers will be charged an extra 17 pence per week.

BBC: Council tax payers to pay more for North Wales Police

Instead of saying that the subscribers will be over-charged for extra use, the company is saying that the users will get a discount for controlled use.

FORBES: Time Warner Cable Tinkers With Pricing, Stock Should Slip To $66