The client's would have to pay his Retainer Fee but it's worth it.

客户端不得不支付他聘金，但不值得的。

youdao

I have an attorney that is charging a retainer fee and also a contingency rate.

我的律师说，收取预聘费，也是应变率。

youdao

She is on call to work three times a week for a former client, in return for which she earns a decent retainer fee, school tuition for her grandson, and the flexibility to take on other clients.

她现在每周为一位老客户工作三次，随叫随到，得到的报酬是一笔不低的聘用费、孙子的学费和接手其他客户的灵活性。

youdao

For a monthly retainer fee, a patient can have access to their family physician at any time.

FORBES: Concierge medicine as a replacement for insurance

To help with the costs of raising her grandson, Natalie receives a retainer fee from her local council in London, but says grandparents need more support if they have taken on parental responsibility.

BBC: 'I gave up my job to look after my grandson'

First, a consultant may receive an expressly stated annual contractual fee or retainer.

FORBES: Compelling Pension Consultant Disclosure (June 1, 2002 )