There is no specific figure. However, on average, the cost of developing a web application with Node JS may range from $5,000 to $30,000 for basic to medium-scale web applications. For mobile applications, the cost may start from $10,000 and go up to $70,000. If you want to know the exact value of your project development cost, we advise you to share your project requirements, and then we can give you the exact cost estimation.