The cost involved in web app development services depends on several factors: 

The type of application (PWA/eCommerce/SaaS, and so on)

The industry (entertainment/banking/consumer application/business platform, etc.)

App complexity - number of panels, amount of data, need for an API connection, admin console, user profiles, etc.

If it is a pre-built solution, we assess the existing tech infrastructure and conduct an end-to-end assessment to understand your technical and functional requirements. It helps us cut down on technical debt and aim for long-term sustainability.