What is the price of push advertising?

Push ads are push ads that go straight to the notification bar. For example, if you download a certain ordering software, the software will send you advertising information at a specific time, and prompt you directly in the notification bar like SMS and WeChat. If you send a push advertisement to the user through SMS, it will be automatically blocked to a large extent; If you use other platforms to advertise, the cost is definitely not low, because it affects the user experience, and the general platform rarely pushes such advertisements to others.