Generally speaking, there is no need to pay any handling fees when processing through formal channels, such as the official website, counters, etc. However, some cards may charge a certain card fee due to production problems. But the question of what platinum cards, black cards or special cards are available can no longer be considered.
As for the so-called card application intermediaries, it is illegal to apply for a card for a fee. You must not go there. What if you are cheated? In addition, some of them use illegal methods to obtain credit cards, so you'd better not contact them.