The phrase "costly fees" refers to charges or payments that are quite expensive or can be a burden to someone's finances.
Sentences with «costly fees»
Avoid costly fees and interest by following our tips. (moneysmart.gov.au)
Having a suspended license not only removes your driving privileges, but can leave you with costly fees and increased car insurance premiums. (dmv.org)
Most people are afraid of costly fees when joining a program like this. (lendedu.com)