Not expensive. It depends on what kind of advertisement you put in. The quotation of each product is different. If you put in a circle of friends normally, you must rely on the industry to control your expenses. Generally, looking for a third-party organization will tell you clearly. I'm in the IT industry. I'm familiar with advertisements such as Weibo, WeChat, 360, Baidu, sogou, Meitu and Today's Headlines. Let me give you a suggestion. Look at the successful cases of the industry first.