It may be a scam, because the training of' prospective employees' is generally free. If you want to be an agent, you must have a qualification certificate, which is stipulated by the state. However, only the registration fee is needed for research, which seems to be more than 60 yuan, but it is not clear whether the 400 yuan he asked you to pay includes information fees and so on.

In a word, be careful not to be fooled.