The price of door closers varies depending on the brand, model and function. Generally speaking, the price of door closers on the market ranges from a few hundred to several thousand RMB. The specific price depends on the following factors:

1. Brand: Well-known brands are usually more expensive because they are guaranteed in quality and reputation.
2. Model and specification: Door closers have many models and specifications, such as surface installation type, floor installation type, hidden type, etc. The price of different models will vary.
3. Function: Some door closers may have special functions, such as speed adjustment, fire protection function, etc. These functions will also affect the price.
4. Installation method: The installation method will also affect the cost. For example, surface installation is usually cheaper than hidden installation.

If you need a specific price for a door closer, it is recommended to consult the local building materials market or professional supplier, who can provide detailed quotations and suggestions based on your needs.