As for the promotion fee, this click fee is different. It can be set from the background, but it will be affected by many factors. For example, if you set the charge per click as 2 yuan, you will get more favorable comments, more collections and more views (popularity). A single click may be more than 1 yuan, so you will see many merchants not only brush reviews, but also brush collection traffic.

I hope I can give you some reference.